Category: 56-81-5

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.56-81-5, name is Propane-1,2,3-triol, molecular formula is C3H8O3, molecular weight is 92.0938, as common compound, the synthetic route is as follows.Computed Properties of C3H8O3

Will be 920g of glycerin,990gParaformaldehyde and20 g of the supported solid super acid catalyst prepared in Example 2 was addedIn the reaction device, the reaction is heated to 80 C, and the water having a lower boiling point and the trioxane formed in the reaction process enters the fractionation device.According to the principle that the boiling point of paraformaldehyde is lower than water, the triacetal is fractionated back to the reaction unit through a fractionation device.The reaction was carried out as a raw material, and the reaction was completed for 5 hours to obtain glycerol formal, and the product was analyzed by HPLC-MS.At 96.3%, the ratio of the six-membered ring product to the product of the five-membered ring in the product was 70:25.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,56-81-5, Propane-1,2,3-triol, and friends who are interested can also refer to it.

Reference:
Patent; Zhejiang Haotang Industrial Co., Ltd.; Liu Demin; (5 pag.)CN109535122; (2019); A;,
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Synthetic Route of 56-81-5, Adding some certain compound to certain chemical reactions, such as: 56-81-5, name is Propane-1,2,3-triol,molecular formula is C3H8O3, 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 56-81-5.

General procedure: In(OTf)3 (5.6 mg, 10 mumol, 1 mol %) was added to a mixture of cyclohexanone dimethylacetal (144 mg, 1.00 mmol) and finely ground 2,2-dimethyl-1,3-propanediol (111 mg, 1.10 mmol) and the reaction mixture stirred at room temperature for 30 min. At this time, residual MeOH was removed under reduced pressure and the crude residue passed through a short plug of basic alumina, which was washed with hexane (2×2 mL). The solvent was removed under reduced pressure to give the product, as a colourless oil (170 mg, 92%).

According to the analysis of related databases, 56-81-5, the application of this compound in the production field has become more and more popular.

Reference:
Article; Smith, Brendan M.; Kubczyk, Tomasz M.; Graham, Andrew E.; Tetrahedron; vol. 68; 38; (2012); p. 7775 – 7781;,
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Related Products of 56-81-5, 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. 56-81-5, name is Propane-1,2,3-triol. A new synthetic method of this compound is introduced below.

General procedure: 2.2 Adsorption of glycerol on silica gel (0009) Glycerol was adsorbed as follows: 1g of glycerol and 2g of silica gel were mechanically mixed until total adsorption on the solid. 2.3 Lipase-catalyzed esterification (0010) Esterification of glycerol was performed in 10mL flasks, which were kept in a thermostatic bath with temperature control and magnetic stirring. The reaction time was 6h. The reaction was carried out as follows: 110mg of capric acid were dissolved in 3mL n-heptane, then the amount of glycerol adsorbed onto silica fixed to each reaction under study was added. When the reactant mixture reached the selected temperature, the reaction was started by adding 50% of the total amount of enzyme to be added (time 0). The remaining 50% of the biocatalyst was added after 3h of reaction. The values of glycerol, immobilized lipase dosage and reaction temperature were established according to the experimental design explained below. Highly hydrophilic polyols cause loss of enzymatic activity. This may be due to two factors: (1) in a hydrophobic reaction medium, polyols adhere to the support of the lipase impeding access of the acid to the active site, or (2) the hydroxyl groups of the polyol strongly interact with the active site of the enzyme.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,56-81-5, its application will become more common.

Reference:
Article; Sanchez, Daniel Alberto; Tonetto, Gabriela Marta; Ferreira, Maria Lujan; Journal of Molecular Catalysis B: Enzymatic; vol. 100; (2014); p. 7 – 18;,
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Related Products of 56-81-5, 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.56-81-5, name is Propane-1,2,3-triol, molecular formula is C3H8O3, molecular weight is 92.0938, as common compound, the synthetic route is as follows.

To a 1,4-dioxane solution (200 mL) containing glycerol(18.4 g, 0.20 mol) and vinyl benzoate (29.6 g, 0.20 mol),Lipozyme (30 g) was added, and the mixture was stirred for48 h at 55C. After removal of the enzyme by filtration, thereaction mixture was evaporated under reduced pressure andthe residue was partitioned between saturated brine and dichloromethane(100 mL each), and extracted with dichloromethane(3 60 mL). The combined organic layer waswashed with saturated brine, and dried over anhydrousNa2SO4. The extract was washed with hexane to removeunreacted vinyl benzoate. Subsequently, the extract was vacuumdried, affording 36 g of (±)-1 (75% yield) as a colorlessoil. IR (KBr), cm-1: 3600 – 3100, 3050, 1700, 1300, 690; 1HNMR (200 MHz, CDCl3) 3.64-3.86 (2H, m, C3H2), 4.04-4.14 (1H, m, C2H), 4.39-4.57 (2H, m, C1H2), 7.40-7.52 (2H,m, 2C7H), 7.56 (1H, m, C8H), 8.02-8.13 (2H, m, 2C6H); 13CNMR (CDCl3, 200MHz) 63.8 (C3), 65.5 (C1), 70.6 (C2),128.6 (2C7), 129.4 (2C6), 130.7 (C5), 133.1 (C8), 166.5(C4). EI-LR-MS, m/z, M+: 196.

Statistics shows that 56-81-5 is playing an increasingly important role. we look forward to future research findings about Propane-1,2,3-triol.

Reference:
Article; Rustoy, Eduardo M; Dana, Alejandro; Letters in Organic Chemistry; vol. 13; 1; (2016); p. 71 – 75;,
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Synthetic Route of 56-81-5, 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. 56-81-5, name is Propane-1,2,3-triol, molecular formula is C3H8O3, 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.

To a 1,4-dioxane solution (200 mL) containing glycerol(18.4 g, 0.20 mol) and vinyl benzoate (29.6 g, 0.20 mol),Lipozyme (30 g) was added, and the mixture was stirred for48 h at 55C. After removal of the enzyme by filtration, thereaction mixture was evaporated under reduced pressure andthe residue was partitioned between saturated brine and dichloromethane(100 mL each), and extracted with dichloromethane(3 60 mL). The combined organic layer waswashed with saturated brine, and dried over anhydrousNa2SO4. The extract was washed with hexane to removeunreacted vinyl benzoate. Subsequently, the extract was vacuumdried, affording 36 g of (±)-1 (75% yield) as a colorlessoil. IR (KBr), cm-1: 3600 – 3100, 3050, 1700, 1300, 690; 1HNMR (200 MHz, CDCl3) 3.64-3.86 (2H, m, C3H2), 4.04-4.14 (1H, m, C2H), 4.39-4.57 (2H, m, C1H2), 7.40-7.52 (2H,m, 2C7H), 7.56 (1H, m, C8H), 8.02-8.13 (2H, m, 2C6H); 13CNMR (CDCl3, 200MHz) 63.8 (C3), 65.5 (C1), 70.6 (C2),128.6 (2C7), 129.4 (2C6), 130.7 (C5), 133.1 (C8), 166.5(C4). EI-LR-MS, m/z, M+: 196.

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 56-81-5, Propane-1,2,3-triol.

Reference:
Article; Rustoy, Eduardo M.; Dana, Alejandro; Letters in Organic Chemistry; vol. 13; 1; (2016); p. 71 – 75;,
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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.56-81-5, name is Propane-1,2,3-triol, molecular formula is C3H8O3, molecular weight is 92.0938, as common compound, the synthetic route is as follows.Computed Properties of C3H8O3

A solution of glycerol (11.2 mmol) in 20 mL CH2Cl2 was charged with a freshly prepared porous silicon chip (Example 1). Trifluoroacetic acid (TFA) (3.4 mL, 44.7 mmol) was added to the solution via syringe. The mixture was allowed to stir at ambient temperature (23 C.) for 20 hours. The solvent was then removed under reduced atmospheric pressure. Column chromatography was used to separate the PDO from product impurities. The desired 1,3-propanediol product was isolated in 32-55% yield.All publications, patents, and patent documents are incorporated by reference herein, as though individually incorporated by reference. The invention has been described with reference to various specific and preferred embodiments and techniques. However, it should be understood that many variations and modifications may be made while remaining within the spirit and scope of the invention.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,56-81-5, Propane-1,2,3-triol, and friends who are interested can also refer to it.

Reference:
Patent; Iowa State University Research Foundation, Inc.; US7514587; (2009); B1;,
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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 56-81-5 as follows., 56-81-5

4.2.7 cis-2-Phenyl-1,3-dioxan-5-ol (18) Concentrated sulfuric acid (3 drops) was added to a mixture of glycerol (44 mL, 55 g, 0.60 mol) and freshly distilled benzaldehyde (48 mL, 50 g, 0.47 mol) in toluene (69 mL). The resulting mixture was heated to reflux in a Dean-Stark water separator. When the separation of water was complete (8.5 mL), the reaction mixture was allowed to cool to room temperature and the solvent removed in vacuo. The resulting white solid was recrystallized from isopropyl ether/petroleum ether. The precipitate was filtered off and purified by flash column chromatography (? = 6 cm, h = 15 cm, V = 50 mL, cyclohexane/ethyl acetate = 2:1, Rf = 0.16) to give 18 as colorless solid (42.6 g, 0.24 mol, 50% yield). Mp = 81 C; 1H NMR (DMSO-d6): delta [ppm] = 3.48-3.52 (m, 1H, OCH2CHOH), 3.91-3.97 (m, 2H, OCH2CHOH), 4.01-4.07 (m, 2H, OCH2CHOH), 4.99 (d, J = 4.8 Hz, 1H, OH), 5.53 (s, 1H, CHPh), 7.33-7.40 (m, 3H, 3′-Hphenyl, 4′-Hphenyl, 5′-Hphenyl), 7.42-7.47 (m, 2H, 2′-Hphenyl, 6′-Hphenyl); 13C NMR (DMSO-d6): delta [ppm] = 62.4 (1C, OCH2CHOH), 71.4 (2C, OCH2CHOH), 100.2 (1C, CHPh), 126.2 (2C, C-2’phenyl, C-6’phenyl), 127.9 (2C, C-3’phenyl, C-5’phenyl), 128.5 (1C, C-4’phenyl), 138.9 (1C, C-1’phenyl); IR (neat): [cm-1] = 3271, 2916, 2851, 1450, 1385, 1339, 1277, 1153, 1084, 995, 976, 806, 741, 694; HRMS (m/z): [M+H]+ calcd for C10H13O3, 181.0859; found, 181.0878; HPLC (method 1): tR = 11.7 min, purity 95.4%.

The chemical industry reduces the impact on the environment during synthesis 56-81-5, I believe this compound will play a more active role in future production and life.

Reference:
Article; Tangherlini, Giovanni; Torregrossa, Tullio; Agoglitta, Oriana; Koehler, Jens; Melesina, Jelena; Sippl, Wolfgang; Holl, Ralph; Bioorganic and Medicinal Chemistry; vol. 24; 5; (2016); p. 1032 – 1044;,
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56-81-5, 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. 56-81-5, name is Propane-1,2,3-triol, molecular formula is C3H8O3, 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: Diols and polyol reactants (100 mg) were allowed to react with benzoic anhydride (1.1 equiv) in acetonitrile (1 mL) at 40C for 8-12 h in the presence of TBAOBz (0.2 equiv). The reaction mixture was directly purified by flash column chromatography (hexanes/EtOAc=2:1 to 1:1), affording the pure selectively protected derivatives.

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. 56-81-5, Propane-1,2,3-triol, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Zhang, Xiaoling; Ren, Bo; Ge, Jiantao; Pei, Zhichao; Dong, Hai; Tetrahedron; vol. 72; 7; (2016); p. 1005 – 1010;,
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