Category: ethers-buliding-blocks

Reference of 207226-31-1, 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. 207226-31-1, name is 1,3-Dibromo-5-(trifluoromethoxy)benzene belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

The bromide (3.0 g, 9.38 mmol), tri-nbutyl-l-elhoxyvinyl tin (3.56 g, 9.85 mmol), and PdCl2(Ph3P)2 (0.66 g, 0.94 mmol) were dissolved in toluene and the solution stirred at 95 C for 3 hours. The volatiles were removed in vac, the residue dissolved in 1,4-dioxane (20 mL), aqueous HCl (2 N, 14taunL) added, and the solution stirred rapidly at RT for 1 hour. The mixture was diluted with water (400 mL), followed by aqueous/EtOAc work-up and silica gel chromatography (EtOAc: hexanes (1:19)) to give the titled compound.

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, 1,3-Dibromo-5-(trifluoromethoxy)benzene, other downstream synthetic routes, hurry up and to see.

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. 19500-02-8, name is 3-Methoxy-2-methylaniline, A new synthetic method of this compound is introduced below., Safety of 3-Methoxy-2-methylaniline

The 15.0g of 3-amino-1-methoxy-2-methylbenzene mixture, 48.7g of triphosgene and 350ml of toluene was heated under reflux for 3 hours with stirring. The reaction mixture was allowed to cool and concentrated under reduced pressure to give 17.0g of 1-methoxy-3-isocyanato-2-methylbenzene.

The synthetic route of 19500-02-8 has been constantly updated, and we look forward to future research findings.

Reference of 1535-73-5, The chemical industry reduces the impact on the environment during synthesis 1535-73-5, name is 3-Trifluoromethoxyaniline, I believe this compound will play a more active role in future production and life.

General procedure: To the stirred mixture of benzaldehyde (0.20 mL, 2.0 mmol) and amine (2.0 mmol, aniline: 0.18 mL, 4-toluidine: 0.21 g, biphenyl-4-amine: 0.34 g, 4-fluoroaniline: 0.19 mL, 4-chloroaniline: 0.26 g, 4-bromoaniline: 0.24 g, 4-nitroaniline: 0.28 g, ethyl 4-aminobenzoate: 0.33 g, 4-methoxyaniline: 0.25 g, 3,4-dimethoxyaniline: 0.31 g, 2-(methylthio)aniline: 0.25 mL, 2-aminobenzophenone: 0.39 g, 3-phenoxyaniline: 0.37 g, 3-(trifluoromethyl)aniline: 0.25 mL, 3-(trifluoromethoxy)aniline: 0.27 mL, naphthalene-1-amine: 0.29 g) was added (1.2 mL, 2.0 mmol) of T3P (Aldrich 50percent solution in EtOAc). If the mixture did not become a solution, (in the cases of the examples covered by entries 3 and 7 of Table 1) CH2Cl2 (2 mL) and EtOAc (2 mL) were added. After 5 min, (0.35 mL, 2.0 mmol) of P(OEt)3 was added and the mixture was stirred at 26 °C. After completion of the reaction (5?10 min), the mixture was diluted with EtOAc (15 mL) and washed with 10percent NaHCO3 solution (15 mL). The organic phase was dried (Na2SO4), filtered and concentrated. The residue was purified by flash chromatography on silica gel (Merck 107736 Silica gel 60H, CH2Cl2?MeOH) to afford products 3a?p.

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, 3-Trifluoromethoxyaniline, other downstream synthetic routes, hurry up and to see.

102-52-3, name is 1,1,3,3-Tetramethoxypropane, belongs to ethers-buliding-blocks compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. SDS of cas: 102-52-3

Example 1: Ethyl fl2-Amino-3-chloro-6,7,10,ll-tetrahydro-7,ll- methanocycloocta[61 quinolin-9-yl)acetate (HUP 1)Preparation of tetramethyl 3,7-Dihydroxybicyclo[3.3.11nona-2,6-diene-2,4,6,8- tetracarboxylateA mixture of 1,1,3,3 tetramethoxypropane (32.8 g, 0.20 mol) and 2 M HC1(100 mL) was stirred for 1.5 h at room temperature. To this mixture cooled at 0C was added successively and carefully an aqueous solution of 5 M NaOH within 30 min (pH = 8) and MeOH (100 mL). At 0C, dimethyl-3-oxoglutarate (69.6 g, 0.40 mol) was added, followed by addition of MeOH (70 mL). The reaction mixture was allowed to warm to room temperature and stirred for 3 days. The reaction mixture was acidified to pH = 3 with 10 M HC1. Filtrating fractionwise, washing with water and drying at the dessicator afford the desired tetra ester as a white solid (39.2 g, 51%).

The synthetic route of 102-52-3 has been constantly updated, and we look forward to future research findings.

Electric Literature of 7252-83-7,Some common heterocyclic compound, 7252-83-7, name is 2-Bromo-1,1-dimethoxyethane, molecular formula is C4H9BrO2, 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.

In a 250 mL round bottom flask was added 4-(morpholinyl)thiobenzamide (2.22 g, 10 mmol) and dissolved in ethanol (50 mL).Then 2-bromo-1,1-dimethoxyethane (1.69 g, 10 mmol) and p-toluenesulfonic acid (1.90 g, 10 mmol) were added while stirring, and the reaction system was heated to 95C and reacted overnight.After the reaction was completed, the mixture was cooled to room temperature and filtered to give a solid which after drying gave a yellow solid (2.00 g, 81%).

The synthetic route of 7252-83-7 has been constantly updated, and we look forward to future research findings.

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. 4698-11-7, name is 10-Methoxy-5H-dibenzo[b,f]azepine, A new synthetic method of this compound is introduced below., name: 10-Methoxy-5H-dibenzo[b,f]azepine

Following the procedure of Example 4, but using dichloromethane as the solvent instead of toluene, at the reflux temperature, the yield is 52.0 (68.7% on theoretical).

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

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. 4393-09-3, name is (2,3-Dimethoxyphenyl)methanamine, A new synthetic method of this compound is introduced below., Product Details of 4393-09-3

EXAMPLE 13 2-[Trans-(4-aminocyclohexyl)amino]-6-[(2,3-dimethoxybenzyl)amino]-9-cyclopentylpurine dihydrochloride Scheme A, step b: 2-Chloro-6-[(2,3-dimethoxybenzyl)amino]-9-cyclopentylpurine 2-Chloro-6-[(2,3-dimethoxybenzyl)amino]-9-cyclopentylpurine is prepared from 2,6-dichloro-9-cyclopentylpurine, 2,3-dimethoxybenzylamine, and triethylamine essentially as described above in Example 1, Scheme A, step b. Scheme A, step c: 2-[Trans-(4-aminocyclohexyl)amino]-6-[(2,3-dimethoxybenzyl)amino]-9-cyclopentylpurine dihydrochloride 2-[Trans-(4-aminocyclohexyl)amino]-6-[(2,3-dimethoxybenzyl)amino]-9-cyclopentylpurine dihydrochloride is prepared from 2-chloro-6-[(2,3-dimethoxybenzyl)amino]-9-cyclopentylpurine essentially as described in Example 1, Scheme A, step c.

The synthetic route of 4393-09-3 has been constantly updated, and we look forward to future research findings.

Adding a certain compound to certain chemical reactions, such as: 701-56-4, name is 4-Methoxy-N,N-dimethylaniline, belongs to ethers-buliding-blocks compound, 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 701-56-4, category: ethers-buliding-blocks

General procedure: A round-bottom flask was chargedwith N,N-dialkyl aniline dissolved in toluene solution, under N2 condition. TBHP was added drop wise and reaction was stirred for 2 min. Triethylamine was added thereafter, and then the contents of the reaction were stirred for 3 h at 110 C under inert N2 condition. The reaction mixture was washed 2-3 times with H2O and ethyl acetate. The upper organic layer was separated and dried over sodium sulphate and then subjected to rotavapour. The crude mixture was purified by column chromatography on silica gel (60-120).

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Adding a certain compound to certain chemical reactions, such as: 62415-74-1, name is 1,2-Dibromo-4-methoxybenzene, belongs to ethers-buliding-blocks compound, 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 62415-74-1, name: 1,2-Dibromo-4-methoxybenzene

The zinc reagent 2b was prepared according to TP1 from 1,2-dibromo-4-methoxybenzene (1b, 3.98 g, 15 mmol), Zn-powder(2.94 mg, 45 mmol) and InCl3 (0.25 g, 1.13 mmol). The reaction was carried out in 15 mL DMPU at 50 C for 2 h. Iodolysis indicated a yield of 59% bimetallic reagent (8.85 mmol). The solution containing the zinc reagent was separated from the remaining zinc powder and transferred to a new flask containing a solution of methyl 4-iodobenzoate (3k, 788 g,30 mmol) and PEPPSI-iPr (0.14 g, 0.21 mmol) in THF (15 mL).The reaction mixture was stirred at 50 C for 12 h before being quenched with HCl (2 M, 40 mL). Flash column chromatographical purification on silica gel (pentane/diethylether = 5:1) afforded 4m as a white solid (2.37 g, 6.29 mmol,71%).

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Related Products of 75148-49-1,Some common heterocyclic compound, 75148-49-1, name is 3-Bromobenzaldehyde Diethyl Acetal, molecular formula is C11H15BrO2, 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.

7c) In analogy to Example 7a), from 1-bromo-3-diethoxymethyl-benzene (Example 6c)) and ethyl 1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-[[(trifluoromethyl)sulphonyl]oxy]-quinoline-3-carboxylate there is obtained ethyl 1-cyclopropyl-7-(3-diethoxymethyl-phenyl)-6-fluoro-1,4-dihydro-4-oxo-quinoline-3-carboxylate as a colourless solid. Yield: 44%. Mass spectrum: peaks: inter alia at 453 (M+, 16%), 408 (21%), 381 (100%).

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