Category: 28539-02-8

As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 28539-02-8, name is 1-(Hydroxymethyl)benzotriazole, molecular formula is C7H7N3O, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below. Recommanded Product: 1-(Hydroxymethyl)benzotriazole

Triethylamine (30 muL), 1H-benzotriazole-1-methanol (48 mg), and sodium triacetoxyborohydride (91 mg) were added to a solution of 9-methyl-6-{6-[2-(piperidin-4-yl)ethoxy]-5-(trifluoromethyl)pyridin-3-yl}-9H-purine-2-carbonitrile monohydrochloride (100 mg) in THF (1.5 mL)-EtOH (1.5 mL), and the mixture was stirred at room temperature for 16 hours. After a saturated aqueous NaHCO3 solution and EtOAc were added to the reaction mixture, extraction thereof was performed using EtOAc, and the extract was washed with saturated brine. The organic layer was dried over MgSO4 and filtered, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (CHCl3:MeOH = 100:0 to 80:20), whereby 9-methyl-6-{6-[2-(1-methylpiperidin-4-yl)ethoxy]-5-(trifluoromethyl)pyridin-3-yl}-9H-purine-2-carbonitrile (57 mg) was obtained as a solid

With the rapid development of chemical substances, we look forward to future research findings about 28539-02-8.

Reference:
Patent; Astellas Pharma Inc.; NAKAJIMA, Yutaka; IMADA, Sunao; TAKASUNA, Yuji; AOYAMA, Naohiro; NIGAWARA, Takahiro; SHIRAKAMI, Shohei; SHIRAI, Fumiyuki; SATO, Junji; NAKANISHI, Keita; KUBO, Kaori; EP2840083; (2015); A1;,
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Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 28539-02-8, name is 1-(Hydroxymethyl)benzotriazole. A new synthetic method of this compound is introduced below., Quality Control of 1-(Hydroxymethyl)benzotriazole

To a stirred solution of n-BuLi (2.5 M in hexanes, 22.9 ml, 57.4 mmol) in THF(120 ml) was added dropwise iPr2NH (8.11 ml, 57.4 mmol) at -10 C. The solution was allowed to stir at 0 C for 30 min and then cooled to -78 C. Enone 83 (8.62 g, 19.1 mmol) inTHF (25 ml) was added and stirring was continued for 1 h. 1H-Benzotriazole-1-methanol in THF (175 ml) was added dropwise and the reaction mixture was kept 2 h at -78 C. The reaction was quenched with water (85 ml) and extracted with Et2O (2 × 250 ml). The combined organic layers were washed successively with 4 M NaOH (85 ml) and brine (85 ml), dried (MgSO4) and concentrated in vacuo. Purification by flash chromatography onsilica gel with petroleum ether/EtOAc 9:1 to 6:1 as eluent gave alcohol S28 (6.10 g, 67%) as a colourless oil.

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it, 28539-02-8, 1-(Hydroxymethyl)benzotriazole.

Reference:
Article; Bruss, Hanna; Schuster, Hannah; Martinez, Remi; Kaiser, Markus; Antonchick, Andrey P.; Waldmann, Herbert; Beilstein Journal of Organic Chemistry; vol. 10; (2014); p. 194 – 208;,
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Related Products of 28539-02-8, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 28539-02-8, name is 1-(Hydroxymethyl)benzotriazole, molecular formula is C7H7N3O, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

3. 3-(4-tert-butylsulfanvIthieno[3,2-d]pyrimidin-7-yl)-5-(hydroxymethyl)cyclopent-2-en-1-one Lithium bis(trimethylsilyl)amide (1.0 M in THF, 0.66 mL, 0.66 mmol) is added to a solution of 3-(4-tert-butylsulfanylthieno[3,2-d]pyrimidin-7-yl)cyclopent-2-en-1-one (0.10 g, 0.33 mmol) in THF (2.0 mL) at -78 C. and the resulting mixture is stirred at this temperature over 1 hr. To this mixture, a solution of 1-hydroxymethylbenzotriazole (0.10 g, 0.66 mmol) in a mixture of THF (1.0 mL) and hexamethylphosphoramide (HMPA, 0.10 mL) is added. The resulting mixture is stirred at -78 C. for 2 hr then quenched with saturated aqueous NH4Cl (1.0 mL). THF is removed in vacuo and the resulting residue is taken up in dichloromethane, dried with Na2SO4, filtered and concentrated in vacuo. The crude is purified by chromatograph to give desired title compound as a solid (0.08 g, 69%). LCMS (m/z) M+H=335.4; tR=2.89 min.

While traditionally a conservative industry, chemical producers will need to modernize their PR strategies to stay relevant.we look forward to future research findings about 28539-02-8, 1-(Hydroxymethyl)benzotriazole.

Reference:
Patent; Wang, Zhong; Smith, Emilie D.; Veal, James M.; Huang, Kenneth H.; Atkinson, Robert N.; Jiang, Rong; US2012/77814; (2012); A1;,
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Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 28539-02-8, name is 1-(Hydroxymethyl)benzotriazole. A new synthetic method of this compound is introduced below., Formula: C7H7N3O

To a solution of 3 ,4,6-trimethyl-2-(5 -((1 -methylcyclopropyl)methoxy)-2-azabicyclo[4. 1. Ojheptan-2-yl)-6,7-dihydro-5H-pyrrolo[3,4-bjpyridin-5-one (77 mg, 0.217 mmol) in THF (1 mL) was added LiHMDS (1.083 ml, 1.083 mmol) at -78C. Then the mixture was stirred at -78 C for 30 mm. Then(1H-benzo[dj[1,2,3jtriazol-1-yl)methanol (48.5 mg, 0.325 mmol) in THF (1 mL) was dropwise added to the mixture and the mixture was stirred for another 30 mm. The reaction mixture was diluted with water (10 mL) and extracted with EtOAc (10 mLx 2). The combined organic layers were dried over Na2504 and filtered, and the filtrate was concentrated in vacuo to give the residue, which was further purified by prep-TLC (dichloromethane : MeOH = 10:1) to provide the title compound as yellow oil. The title compound was separated by chiral SFC (AD(250mm*3Omm,lOum), 30% MeOH with 0.1%NH3.H20/C02 at 6OmL/min) and Prep-HPLC (TFA) to give four isomers. Example 5 (firstpeak): MS: 386.1 (M+1). ?H NMR (400 MHz, Methanol-d4): oe 4.23-4.25 (1 H, m), 4.11-4.14 (2H, m), 3.97-3.99 (1 H, m), 3.79-3.82 (1 H, m), 3.46-3.49 (1 H, m), 3.33-3.35 (1 H, m), 3.13 (3H, s), 2.94-3.01 (2 H, m), 2.60 (3 H, s), 2.36 (3 H, s), 1.95-2.01 (1 H, m), 1.46-1.70 (2 H, m),1.14 (3 H, s), 0.87-0.92 (1 H, m), 0.58-0.61 (1 H, m), 0.42-0.45 (2 H, m), 0.30-0.32 (2 H, m).Example 6 (second peak): MS: 386.2 (M+1). ?H NMR (400 MHz, Methanol-d4): oe 4.23-4.25 (1H, m), 4.11-4.14 (2 H, m), 4.01-4.04 (1 H, m), 3.79-3.82 (1 H, m), 3.46-3.49 (1 H, m), 3.32-3.35(1 H, m), 3.13 (3 H, s), 2.94-3.01 (2 H, m), 2.60 (3 H, s), 2.36 (3 H, s), 1.95-2.01 (1 H, m), 1.46-1.70 (2 H, m), 1.14 (3 H, s), 0.87-0.92 (1 H,m), 0.58-0.61 (1 H, m), 0.42-0.45 (2 H, m), 0.30-0.32 (2 H, m). Example 7 (third peak): MS: 386.2 (M+1). ?H NMR (400 MHz, Methanol-d4): oe4.23-4.25(1 H, m), 4.11-4.14(2 H, m), 4.01-4.02 (1 H, m), 3.79-3.82 (1 H, m), 3.45-3.47(1 H,m), 3.32-3.35 (1 H, m), 3.13 (3 H, s), 2.94-3.01 (2 H, m), 2.60 (3 H, s), 2.36 (3 H, s), 1.95-2.01(1 H, m), 1.46-1.70 (2 H, m), 1.14 (3 H, s), 0.87-0.92 (1 H, m), 0.58-0.61 (1 H, m), 0.42-0.45 (2H, m), 0.3 1-0.32 (2 H, m). Example 8 (fourth peak): MS: 386.1 (M+1).?H NMR (400 MHz,Methanol-d4): oe 4.23-4.26(1 H, m), 4.11-4.14(2 H, m), 3.98-4.01 (1 H, m), 3.79-3.82(1 H, m), 3.45-3.47 (1 H, m), 3.32-3.35 (1 H, m), 3.13 (3 H, s), 2.94-3.01 (2 H, m), 2.60 (3 H, s), 2.36 (3 H, s), 1.95-2.01 (1 H, m), 1.46-1.70 (2 H, m), 1.14 (3 H, s), 0.87-0.92 (1 H, m), 0.58-0.61 (1 H, m), 0.42-0.44 (2 H, m), 0.3 1-0.32 (2 H, m).

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it, 28539-02-8, 1-(Hydroxymethyl)benzotriazole.

Reference:
Patent; MERCK SHARP & DOHME CORP.; CLAUSEN, Dane James; FELLS, James, I.; KOZLOWSKI, Joseph, A.; LIU, Ping; MAZZOLA, Robert, D., Jr.; (94 pag.)WO2018/226545; (2018); A1;,
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Application of 28539-02-8 , The common heterocyclic compound, 28539-02-8, name is 1-(Hydroxymethyl)benzotriazole, molecular formula is C7H7N3O, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.

7.4 g of hydroxymethylbenzotriazole was added to a single-necked flask, 25 ml of S0C12 was added dropwise,After the end of the mixing, the mixture was stirred for 30 min and refluxed at 80 C for 3 h. The excess S0C12 was distilled off with a rotary evaporator, To give a white crystal, i. EforChloromethyl benzotriazole

The synthetic route of 28539-02-8 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Henan College of Traditional Chinese Medicine; Wang, Xia; Zhang, Chao; Ceng, Dai; Cheng, Di; Song, Ning; Yang, Huai Xia; (11 pag.)(2016);,
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Electric Literature of 28539-02-8 ,Some common heterocyclic compound, 28539-02-8, molecular formula is C7H7N3O, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.

Preparation 5: 4-(5-Cyclopentyl-8-(ethoxycarbonyl)-7,7-difluoro-6,7-dihydro- 5H-imidazo[l,5-d]pyrimido[4,5-b][l,4]diazepin-3-ylamino)-3-methoxybenzoic acid; [0096] lH-Benzotriazole-1 -methanol (51.0 g, 0.342 mol) was weighed into a round bottom flask and solubilized in EtOH (800 mL). Dibenzylamine (67.5 g, 0.342 mol) was added slowly (over 5 min) to the rapidly stirred solution. Formation of a white precipitate was observed shortly after starting addition. The solution was abandoned to stir for 24 h. At this time the reaction is judged complete by NMR (product fragments on LCMS to show only benzotriazole). The majority of the solvent was removed by rotovap and diethyl ether (1 L) was added to the residue with vigorous stirring. This mixture was filtered, the filtrand washed with ether and dried under vacuum to yield N- (dibenzylaminomethyl)benzotriazole as a fluffy white solid (112 g, quat. yield). 1H NMR in CDCl3: (400 MHz) delta ppm 3.80 (s, 4 H) 5.48 (s, 2 H) 7.21 (d, J=8.34 Hz, 1 H) 7.34 – 7.43 (m, 11 H) 7.49 (d, 1 H) 8.09 (d, J=7.83 Hz, 1 H). MS (ES) [M+H] found 329. To a suspension of zinc dust (2.7 g, 41.6 mmol) in dry THF (75 mL), stirred under argon atmosphere, was added chlorotrimethylsilane (2.63 mL, 20.8 mmol) followed, 10 min later, by ethyl dibromo-fluoroacetate (3.92 g, 20.8 mmol). After 10 min a slight exotherm was detected. The reaction was left to activate for 1 hour, whereupon it was cooled in an ice bath and a solution of N-(Dibenzylaminomethyl)benzotriazole (6.83 g, 20.8 mmol) in THF (50 mL) was added drop wise (over 30 minutes) and then the reaction mixture was allowed to warm to room temperature. After 18 h at r.t, NaHCO3 (sat., 50 mL) was added, let stir for 20 minutes, the reaction was filtered on Celite, and the filter pad was washed with EtOAc. The layers were separated and the aqueous phase was extracted with EtOAc (3chi50 mL). The organic layers were combined and washed with IN HCl (70 mL), brine (70 mL), then dried over MgSO4. After evaporation of the solvent, the residue was poured into rapidly stirring ether (100 mL); the solid formed was removed by filtration and discarded. The ether was evaporated from the filtrate to yield a dark yellow syrup. This crude residue was purified on silica gel column chromatographically (0-10% EtOAc :Hexanes) to yield ethyl 3-(dibenzylamino)-2,2-difluoropropanoate as a clear liquid (3.6 g, 50 % yield). 1H NMR in CDCl3: (400 MHz) delta ppm 1.18 (t, J=7.07 Hz, 3 H) 3.14 (t, J=13.26 Hz, 2 H) 3.69 (s, 4 H) 4.14 (q, J=7.16 Hz, 2 H) 7.14 – 7.33 (m, 10 H). MS (ES) [M+H] found 334.[0097] In a round bottom flask, ethyl 3-(dibenzylamino)-2,2-difluoropropanoate (1.72 g, 5.2 mmol) was solubilized in EtOH (25 mL) and TFA added (0.4 mL, 5.5 mmol). Under an atmosphere of nitrogen Pd(OH)2ZC (170 mg of 20% Pd by wt. wet) was added. The reaction mixture was repeatedly purged with nitrogen and then left under hydrogen overnight. At this point the reaction was deemed complete by LCMS, filtered through a pad of Celite, the pad washed with EtOH and the filtrate concentrated without heating to yield ethyl 3-amino-2,2-difluoropropanoate-TFA salt as a foggy syrup which starts to crystallize upon standing (1.31 g, 94 % yield). 1U NMR in J6-DMSO (400 MHz) delta ppm 1.29 (t, J=7.20 Hz, 3 H) 3.72 (t, J=16.17 Hz, 2 H) 4.34 (q, J=7.24 Hz, 2 H). MS (ES) [M+H] found 154.To a round bottom flask was added ethyl 3-amino-2,2-difluoropropanoate (1.31 g, 4.9 mmol), THF (50 mL), cyclopentanone (0.46 mL, 5.1 mmol), and NaOAc (400 mg, 4.9 mmol). To this mixture was added sodium triacetoxyborohydride (1.6 g, 7.3 mmol) portion wise over 15 minutes. The reaction was left to stir overnight. It was then added slowly to a stirring solution of ice (30 mL), NaHCO3 (sat., 10 mL), and EtOAc (100 mL) cooled in an ice-salt bath. The layers were then separated and the aqueous pH further adjusted to 11 using 25% NaOH while cooling in the bath. The aqueous layer was washed with EtOAc (2 x 50 mL), the organic extracts combined, washed with cold NaHCO3, (sat. 20 mL x 2) brine (20 mL), dried over MgSO4, filtered and concentrated to yield ethyl 3- (cyclopentylamino)-2,2-difluoropropanoate as a clear syrup (960 mg, 89 %). 1H NMR in J6-DMSO (400 MHz) delta ppm 1.25 (t, J=7.07 Hz, 2 H) 1.34 – 1.74 (m, 8 H) 3.00 (q, 1 H) 3.11 (t, J=14.15 Hz, 2 H) 4.27 (q, J=7.07 Hz, 2 H). MS (ES) [M+H] found 222. [0098] Ethyl 3-(cyclopentylamino)-2,2-difluoropropanoate (396 mg, 1.79 mmol) was solubilized in acetone (40 mL, dry). The solution was cooled in an ice salt bath under a nitrogen atmosphere and K2CO3 (495 mg, 3.58 mmol) added. To this, a solution of 2,4- dichloro-5-nitropyrimidine (378 mg, 1.97 mmol) in acetone (10 mL, dry) was added dropwise. Upon completion of addition the reaction mixture abandoned and allowed to slowly warm to room temperature and stir overnight. The mixture was then filtered through paper, the filter pad washed with acetone, and the filtrate concentrated. The concentrate was then solubilized in…

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles. 28539-02-8, 1-(Hydroxymethyl)benzotriazole, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; TAKEDA PHARMACEUTICAL COMPANY LIMITED; CAO, Sheldon X.; ICHIKAWA, Takashi; KIRYANOV, Andre, A.; MCBRIDE, Christopher; NATALA, Srinivasa, Reddy; KALDOR, Stephen, W.; STAFFORD, Jeffrey, A.; WO2010/25073; (2010); A1;,
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Electric Literature of 28539-02-8 ,Some common heterocyclic compound, 28539-02-8, molecular formula is C7H7N3O, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.

To a mixture of 4-nitroaniline ( 1.00 g, 7.2 mmol) and 1H-Benzotriazole-1-methanol (1.07 g, 7.2 mmol) in ethanol (25 mL) was stirred under reflux until the compounds was dissolved. After the reaction was stirred for 5 h at room temperature, it was stirred for 12 h at – 5 C. The residue was filtrated and washed with cold ethanol. This residue was added sodium borohydride (0.34 g, 8.99 mmol) in THF (20 mL) and stirred for 1 h under reflux. Then, after an ice water was poured into this reaction, the mixture was extracted with ether (3 x 30 mL). The combined organic layer was washed with brine (30 mL), dried over sodium sulfate, and concentrated.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,28539-02-8, its application will become more common.

Reference:
Article; Uno, Masaharu; Koma, Yosuke; Ban, Hyun Seung; Nakamura, Hiroyuki; Bioorganic and Medicinal Chemistry Letters; vol. 22; 16; (2012); p. 5169 – 5173;,
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Application of 28539-02-8, Adding some certain compound to certain chemical reactions, such as: 28539-02-8, name is 1-(Hydroxymethyl)benzotriazole,molecular formula is C7H7N3O, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 28539-02-8.

Step A: To a mixture of 5a (0.44 g, 2.0 mmol) and EtOH (9.0 mL)was added 1H-benzotriazole-1-methanol (0.30 g, 2.0 mmol). After stirring at room temperature overnight, the reaction mixture was concentrated in vacuo and the obtained residue was triturated with hexane. The resulting precipitate was collected by filtration to give N-(1H-Benzotriazol-1-ylmethyl)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (0.59 g, 84%) as a brown solid. 1HNMR (CDCl3) d: 8.03 (1H, d, J = 8.2 Hz), 7.67 (1H, d, J = 8.2 Hz),7.62 (1H, dd, J = 7.4, 1.6 Hz), 7.44-7.40 (1H, m), 7.33-7.28 (2H,m), 7.09 (1H, t, J = 7.2 Hz), 7.02 (1H, d, J = 8.2 Hz), 6.73 (1H, td,J = 7.4, 0.8 Hz), 6.16 (2H, d, J = 7.4 Hz), 1.37 (12H, s). MS (ESI-) m/z:349 (MH).

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles. 28539-02-8, 1-(Hydroxymethyl)benzotriazole, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Ogiyama, Tomoko; Yamaguchi, Mitsuhiro; Kurikawa, Nobuya; Honzumi, Shoko; Yamamoto, Yuka; Sugiyama, Daisuke; Takakusa, Hideo; Inoue, Shin-ichi; Bioorganic and Medicinal Chemistry; vol. 25; 7; (2017); p. 2234 – 2243;,
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Related Products of 28539-02-8, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 28539-02-8, name is 1-(Hydroxymethyl)benzotriazole, molecular formula is C7H7N3O, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

(100 mg, 0.49 mmol), benzotriazolemethanol (72 mg,0.49 mmol) and p-toluenesulfonic acid (10 mg, 0.05 mmol) were stirred for 6 h at the reflux in 10 mL toluene. The crude product was washed with an aqueous KOH solution (10%, 5 mL), dried under MgSO4 and, then, cooled overnight. Filtration and the consecutive solvent evaporation led to 146 mg of the yellow desired product (89% yield). 1H NMR (CDCl3) d: 8.05-7.35 (m, 4H), 6.11 (d, J = 6.9 Hz, 2H), 3.53-3.42 (m, 1H), 3.18-3.01 (m, 2H), 2.43-2.31 (m, 1H), 2.25 (t, J = 7.4 Hz, 2H), 1.87-1.30 m, 7H. 13C NMR (CDCl3) d: 173.39, 128.20, 124.56, 119.69, 111.07, 56.35, 50.90, 40.26, 38.60, 36.09, 34.62, 28.76, 24.96.. Anal. Calcd for C15H20N4OS2: C, 53.54; H, 5.99; N, 16.65; S, 19.06. Found: C, 53.66; H, 6.10; N, 16.16; S, 19.39; ESI-MS: m/z = 337.1 (M+H+); m/z = 359.1 (M+Na+); m/z = 695.3 (2M+Na+).

While traditionally a conservative industry, chemical producers will need to modernize their PR strategies to stay relevant.we look forward to future research findings about 28539-02-8, 1-(Hydroxymethyl)benzotriazole.

Reference:
Article; De La Reberdiere, Arnaud; Lachaud, Fabien; Chuburu, Francoise; Cadiou, Cyril; Lemercier, Gilles; Tetrahedron Letters; vol. 53; 45; (2012); p. 6115 – 6118,4;,
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Synthetic Route of 28539-02-8 ,Some common heterocyclic compound, 28539-02-8, molecular formula is C7H7N3O, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.

To 1-hydroxymethylbenzotriazole (10.3 g, 69.1 mmol) in toluene (180 mL) was added tert-butyl carbamate (8.1 g, 69.1 mmol) and p-TsOH (26.3 mg, 0.138 mmol) and the solution was refluxed overnight using a Dean-Stark apparatus. The solvent was evaporated and the crude product was recrystallized with toluene to give tert-butyl [(1H-benzo[d][1,2,3]triazol-1-yl)methyl]carbamate (11) (10.9 g, 64%) as a white solid. IR (ATR): 1684, 1643, 1614, 1528 cm-1. 1H NMR (500 MHz, DMSO-d6): delta = 8.40 (m, 1H), 8.03 (d, J = 8.4 Hz, 1H), 7.95 (d, J = 8.4 Hz, 1H), 7.40 (m, 1H), 7.56 (m, 1H), 5.88 (d, J = 6.5 Hz, 2 H), 1.36 (s, 9 H). 13C NMR (125 MHz, DMSO-d6): delta = 155.4, 145.4, 132.1, 127.3, 124.1, 119.0, 111.1, 79.2, 53.3, 27.9.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,28539-02-8, its application will become more common.

Reference:
Article; Delong, Mitchell A.; Sturdivant, Jill M.; Synthesis; vol. 51; 4; (2019); p. 953 – 959;,
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