Tag: M.W=100-200

Synthetic Route of 6966-10-5, 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. 6966-10-5, name is (3,4-Dimethylphenyl)methanol, molecular formula is C9H12O, 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.

General procedure: A mixture of p-methylbenzyl alcohol (1.0 mmol), N-phenylglycine(0.0076 g, 0.05 mmol), CuBr2 (0.0112 g, 0.05 mmol),Na2CO3 (0.1060 g, 1.0 mmol), TEMPO (0.0078 g, 0.05 mmol),H2O (3.0 mL) were added to a 100 mL Schlenk tube, which wasvigorously stirred in air under reflux for 0.5 h. After the reaction,the product was extracted with CH2Cl2 (3 × 2.0 mL). Thecombined organic phase was washed with H2O (3.0 mL) anddried over anhydrous MgSO4. After concentration undervacuum, the residue was purified by column chromatography toafford p-methylbenzaldehyde.Isolated yield: 0.1080 g (90%).

According to the analysis of related databases, 6966-10-5, the application of this compound in the production field has become more and more popular.

Reference:
Article; Zhang, Guofu; Lei, Jie; Han, Xingwang; Luan, Yuxin; Ding, Chengrong; Shan, Shang; Synlett; vol. 26; 6; (2015); p. 779 – 784;,
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Application of 4415-73-0, With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.4415-73-0, name is 1,1-Cyclobutanedimethanol, molecular formula is C6H12O2, molecular weight is 116.1583, as common compound, the synthetic route is as follows.

Step 2:Oxalyl chloride (61.5 ml_, 708 mmol) is added over 1.5 h to a -80 C (internal temperature; Et20/dry-ice bath is used for cooling) solution of DMSO (50.2 ml_, 708 mmol) in DCM (3.00 L). The reaction mixture is allowed to stir at -80 C for 0.5 h, and then a solution of 4a1 (30.9 g, 266 mmol) in DCM (500 mL) is added over 1 h while maintaining an internal temperature of -80 C. The reaction mixture is stirred for 0.5 h at -80 C, and then TEA (297 mL, 2.13 mol) is added over 1 h while keeping an internal temperature of -80 C. The cooling bath is removed, and the reaction mixture is allowed to warm to 10 C over 4 h. The crude material containing 4a2 is used as such in the next step.

Statistics shows that 4415-73-0 is playing an increasingly important role. we look forward to future research findings about 1,1-Cyclobutanedimethanol.

Reference:
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; BROCHU, Christian; GRAND-MAITRE, Chantal; FADER, Lee; KUHN, Cyrille; BERTRAND-LAPERLE, Megan; PESANT, Marc; WO2013/26163; (2013); A1;,
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Electric Literature of 3068-00-6, The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 3068-00-6, name is 1,2,4-Butanetriol. This compound has unique chemical properties. The synthetic route is as follows.

General procedure: To a solution of CoCl2 (0.6 mmol) in anhyd MeCN (4 mL), the selecteddialkyl acetal (1 mmol), TMSCl (1.1 mmol), and butane-1,2,4-triol (3 mmol) were added, with stirring, at r.t. At the end ofthe reaction, the mixture was extracted with EtOAc and the combinedextracts were washed with 5% NaHCO3. The organic layerwas dried (anhyd Na2SO4) and filtered, and the solvent was evaporatedunder vacuum. The oils obtained were purified by flash chromatographyto give the desired compounds.

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 3068-00-6, 1,2,4-Butanetriol.

Reference:
Article; Battisti, Umberto Maria; Sorbi, Claudia; Franchini, Silvia; Tait, Annalisa; Brasili, Livio; Synthesis; vol. 46; 7; (2014); p. 943 – 946;,
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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. 13330-96-6, name is 4-(Dimethylamino)butan-1-ol. A new synthetic method of this compound is introduced below., COA of Formula: C6H15NO

A solution of 1-propanephosphonic acid cyclic anhydride (0.35 rnL) (1.57 M in THF) was added to a suspension of the product of step (i) (69 mg), triethylamine (0.077 mL), 4- (dimethylamino)-l-butanol (0.12 mL) and 4-dimethylaminopyridine (4.50 mg) in DMF (2 mL). The mixture was stirred at r.t. for 60 h and was then diluted with EtOAc (10 mL). The solution was washed with water (2 x 10 mL) dried and concentrated by evaporation. The crude product was purified by RPHPLC to produce a colourless gum which was dissolved in MeCN (0.5 mL). Benzenesulphonic acid (7.9 mg) was added and the solvent was evaporated to give a residue which was triturated with diethyl ether to give the title compound as a colourless solid (27.0 mg); 1H NMR: 7.61-7.58 (m, IH), 7.48-7.45 (m, 3H), 7.34-7.27 (m, 5H), 6.93 (d, IH), 6.21-6.06 (m, IH), 4.63-4.57 (m, IH), 4.27 (t, 2H), 4.20- 4.12 (m, IH), 3.92 (s, 3H), 3.73 (s, 2H), 3.41-3.33 (m, 4H), 2.42 (s, 6H), 2.03 (s, 3H), 1.77- 1.67 (m, 2H), 1.66-1.57 (m, IH), 1.53-1.43 (m, IH), 1.34-1.21 (m, 2H), 1.15-1.03 (m, 2H), 0.77 (t, 3H); LC-MS m/z 474.

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, 13330-96-6, 4-(Dimethylamino)butan-1-ol.

Reference:
Patent; ASTRAZENECA AB; DAINIPPON SUMITOMO PHARMA CO., LTD; ASTRAZENECA UK LIMITED; BENNETT, Nicholas, James; MCINALLY, Thomas; THOM, Stephen; WO2010/133885; (2010); A1;,
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Application of 558-42-9, With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.558-42-9, name is 1-Chloro-2-methyl-2-propanol, molecular formula is C4H9ClO, molecular weight is 108.5667, as common compound, the synthetic route is as follows.

General procedure: In a150 mL pressure vessel, a suspension of 3-bromo-1H-pyrazole (8 g, 54.43 mmol) cesiumcarbonate (53.2 g, 163.29 mmol), and difluoroiodomethane (10percent wt. in THF, 200 ml, 106.23mmol) was heated at 45°C overnight. The reaction mixture was cooled to room temperature andthen filtered through Celite. The filter cake was washed with Et20 (3 x 150 mL). The filtrate was washed with brine, dried over sodium sulfate and carefully concentrated (20 °C bath, 100 mb vacuum) to give 17 g of a 1.5:1 ratio of regioisomers and solvent still present. This crude material was combined with 3,5-Difluoro-4-formylphenylboronic acid (12.65 g, 68.03 mmol),Palladium acetate (0.31 g, 1.381 mmol), butyldi- 1 -adamantylphosphine (1.171 g, 3.265 mmol) and Potassium carbonate (22.80 g, 164.96 mmol) in dioxane (150 mL) and water (50 mL) the mixture was degassed for 10 mm with argon, then heated at 100 °C overnight. The reaction mixture was cooled to room temperature, concentrated under reduce pressure, the residue was diluted with EtOAc and washed with brine 2x then dried over Na2504, filtered and concentratedunder reduced pressure. The crude residue was purified by silica column chromatography (5percent to15percent EtOAc/Hex). Mixed fractions were recrystallized (5:1 Hex/EtOAc) combined pure product afforded P4. 1HNMR (400 MHz, Chloroform-d) oe 10.35 (d, J = 1.0 Hz, 1H), 7.92 (d, J = 2.8 Hz, 1H), 7.46 (d, J = 9.6 Hz, 2H), 7.24 (t, J = 60.5 Hz, 1H), 6.80 (d, J = 2.8 Hz, 1H).

Statistics shows that 558-42-9 is playing an increasingly important role. we look forward to future research findings about 1-Chloro-2-methyl-2-propanol.

Reference:
Patent; GILEAD SCIENCES, INC.; BACON, Elizabeth M.; CHIN, Elbert; COTTELL, Jeromy J.; KATANA, Ashley Anne; KATO, Darryl; LINK, John O.; SHAPIRO, Nathan; TREJO MARTIN, Teresa Alejandra; YANG, Zheng-Yu; (395 pag.)WO2018/145021; (2018); A1;,
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Reference of 624-95-3 , The common heterocyclic compound, 624-95-3, name is 3,3-Dimethylbutan-1-ol, molecular formula is C6H14O, 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.

[00066] Example V represents an oxidation in which the KBr co-catalyst and the NaHCO3 buffer were removed and they were replaced with Na2B4O7-Zr(acetate)2 additive. [00067] 16.9 g of 3,3-Dimethyl-1-butanol (117.3 mmol) and 0.0765 g MeO TEMPO (0.411 mmol) are charged in a jacketed glass reaction flask as in Example I. Sodium borate (0.380 g, 1.0 mmol) and Zr(acetate)2 (0.2 g solution, 0.1 mmol) are dissolved in water (12.0 cc) and the aqueous solution is added to the stirred organic fraction at 1000 RPM in the reaction flask. The stirred suspension is cooled to 0 C. and the emulsion is re-adjusted to pH=8.4 using 50% solution of CH3COOH. When the temperature of the reactants reached 0 C., 75.5 g (122 mmol) of 12.1% aqueous NaOCl solution are pumped in via a gas-tight syringe over 90 minutes (The pH of the bleach solution was adjusted to 10 using 50% aqueous CH3COOH). During the bleach addition the pH was maintained at 8.3-8.4 levels using few drops of 50% aqueous CH3COOH. The reaction mixture is stirred for an additional 120 min at 0 C. and the organic layer is sampled for GC assay. The reaction in this second stage was kept at pH 8.4 by addition of 0.2-0.25 cc aqueous solution of NaOH (50% concentration). The yield of 3,3-dimethylbutyraldehyde is 95.0% at 60 min and 93.0% at 90 min reaction time

The synthetic route of 624-95-3 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; The NutraSweet Company; US6825384; (2004); B1;,
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Reference of 929-06-6, Adding some certain compound to certain chemical reactions, such as: 929-06-6, name is 2-(2-Aminoethoxy)ethanol,molecular formula is C4H11NO2, 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 929-06-6.

Compound 35A: tert-butyl (2-(2-hydroxyethoxy)ethyl)carbamate O / (Boc)20 HzN^^^ ^”^^OH *~ BocHN’ THF 2-(2-aminoethoxy)ethanol (5 g, 47.56 mmol, 1.00 equiv) was dissolved in THF (100 mL) at 0C and sodium hydroxide (2 g, 50.00 mmol, 1.05 equiv) was then added (solution in 25 mL of water). A solution of di-tert-butyl dicarbonate (10.38 g, 47.56 mmol, 1.00 equiv) in THF (20 mL) was added drop-wise and the reaction was then left under agitation overnight at ambient temperature. The reaction was diluted by adding 50 mL of water and the product was extracted with 3 times 75 mL of AcOEt. The organic phases were combined, washed once with 100 mL of NaCl (sat.), then dried over sodium sulfate, filtered and concentrated under reduced pressure to yield 9 g (92 %) of compound 35A in the form of a yellow oil.

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. 929-06-6, 2-(2-Aminoethoxy)ethanol, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; PIERRE FABRE MEDICAMENT; RILATT, Ian; PEREZ, Michel; GOETSCH, Liliane; BROUSSAS, Matthieu; BEAU-LARVOR, Charlotte; HAEUW, Jean-Francois; WO2015/162293; (2015); A1;,
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In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 4254-29-9, name is 2,3-Dihydro-1H-inden-2-ol, the common compound, a new synthetic route is introduced below. Formula: C9H10O

To a solution of 2,3-dihydro-1H-inden-2-ol 215A (1.6 g, 12 mmol) in CHCl3(40 mL) was added pyridine (0.24 mL) and PBr3(1.28 mL) at 0 C. The mixture was heated at reflux for 1 hour and stirred at room temperature overnight. The reaction mixture was poured into ice-water (50 mL) and extracted with dichloromethane (30 mL x 3). The combined organic layers was washed with brine (40 mL), dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure. The residue was purified with column chromatography on silica gel (petroleum ether, 100% v/v) to furnish Compound 215B. LC-MS (ESI) m/z: non-ionizable compound under routine conditions used;1H-NMR (CDCl3, 400 MHz): delta (ppm) 3.32-3.37 (m, 2H), 3.49-3.55 (m, 2H), 4.74-4.79 (m, 1H), 7.20- 7.28 (m, 4H).

The synthetic route of 4254-29-9 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; BIOMARIN PHARMACEUTICAL INC.; WANG, Bing; (552 pag.)WO2017/214505; (2017); A1;,
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Reference of 115-20-8, Adding some certain compound to certain chemical reactions, such as: 115-20-8, name is Trichloroethanol,molecular formula is C2H3Cl3O, 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 115-20-8.

General procedure: Because activation of a carboxylic acid that is adjacent to a chiral center by use of DCC (or EDC) and DMAP can induce epimerization (loss of chiral purity), the condensation reaction between N-protected chiral amino acids (chiral AAs) and the halogenated alcohols is generally performed using a coupling agent (CA) known to minimize or eliminate epimerization (and thereby maintain chiral purity). Generally, such esters were made by reacting the chiral N-protected amino acid (Compound 11 – ) in a suitable solvent such as DCM or DMF by addition of an excess (e.g. 1 .05-5 eq.) of a tertiary organic base such as TEA, NMM or DIPEA and a slight excess (e.g. 1 .1 -1 .3 eq.) of the coupling agent (e.g. HATU or HBTU). A slight excess (e.g. 1 .05 – 1.5 eq.) of the halogenated alcohol was then added and the reaction was monitored by thin layer chromatograph (TLC) until complete. The product was then worked up as discussed in Example 1 , above. Several N-protected esters of chiral amino acids were prepared using this general procedure as summarized in Table 1 B, below, where yield data is also provided.

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. 115-20-8, Trichloroethanol, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; TRUCODE GENE REPAIR, INC.; COULL, James, M.; GILDEA, Brian, D.; (182 pag.)WO2018/175927; (2018); A2;,
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Electric Literature of 13674-16-3, In the chemical reaction process,reaction time,type of solvent,can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product.An updated downstream synthesis route of 13674-16-3 as follows.

2-{4′-[5-Methyl-2-(4-trifluoromethyl-phenyl)-oxazol-4-yl]-biphenyl-4-yloxy}-3-phenyl-propionic Acid Diisopropyl azodicarboxylate (0.42 mL, 2.52 mmol) in benzene (10 mL) was added dropwise into a cold (0 C.) mixture of 4′-[5-methyl-2-(4-trifluoromethyl-phenyl)-oxazol-4-yl]-biphenyl-4-ol (0.5 g, 1.26 mmol), 3-phenyllactic acid methyl ester (0.45 g, 2.52 mmol), triphenylphosphine (0.66 g, 2.52 mmol), and benzene (20 mL). The reaction mixture was stirred at room temperature for 30 minutes, poured into water, and extracted with ethyl ether. The organic extracts were dried over MgSO4. Evaporation gave a yellow oil (0.6 g). This residue was taken in methyl alcohol (15 mL) and tetrahydrofuran (15 mL) and treated with sodium hydroxide (2 N, 3.0 mL). The reaction mixture was stirred for 30 minutes, poured into water, acidified with HCl (2 N), and extracted with ethyl ether. The organic extracts were dried over MgSO4. Evaporation and crystallization from ethyl ether/hexanes gave a white solid (0.38 g, 55% yield): mp 183-184; MS m/e 544 (M+H)+; Analysis for: C32H24F3NO4Calc’d: C, 70.71; H, 4.45; N, 2.58 Found: C, 70.50; H, 4.32; N, 2.53.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,13674-16-3, its application will become more common.

Reference:
Patent; Wyeth; US6699896; (2004); B1;,
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