午夜插插,噜噜噜影院,啪啪伊人网,欧美熟夫,景甜吻戏视频,男人强操性感蕾丝美女视频在线网站,日本美女跳舞视频

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List 2-Fluoro-4-methoxyacetophenone
74457-86-6

2-Fluoro-4-methoxyacetophenone synthesis

5synthesis methods
Obtained by reaction of acetic anhydride with 3-fluoroanisole in the presence of aluminium chloride in carbon disulfide at r.t., then at 30–35° until no more hydrochloric acid is evolved.
-

Yield:74457-86-6 26.5 mg

Reaction Conditions:

with hydrogenchloride;water in diethyl ether at 20; for 30 h;

Steps:

3.3

[3] A mixture of 2-fluoro-4-methoxyacetophenone oxime ether 39.4mg (0.2mmol), dissolved with 2ml 2ml of ether was added at a concentration of 37% hydrochloric acid was stirred at room temperature for 30 hours.After completion of the reaction by TLC, the reaction solution was neutralized with saturated sodium carbonate solution to pH 7, the mixture was extracted with ether (10ml × 3), the organic phase was dried over anhydrous sodium sulfate and dried under reduced pressure to remove the solvent, purified by column chromatography (TLC) (eluent ratio: volume ratio of petroleum ether ethyl acetate 20: 1) separation of the product containing eluate was collected, the eluent solvent was distilled off to give 2-fluoro-4-methoxy ethanone 26.5mg (gas chromatography, 79% yield).

References:

CN103922904,2016,B Location in patent:Paragraph 0058; 0059; 0062

2-Fluoro-4-methoxyacetophenone Related Search: