天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

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 3,5-Dibromobenzyl bromide
56908-88-4

3,5-Dibromobenzyl bromide synthesis

4synthesis methods
-

Yield:56908-88-4 74%

Reaction Conditions:

with NBS;dibenzoyl peroxide in Carbon tetrachloride; for 24 h;Reflux;

Steps:

1.c synthesis of Intermediate C

1,3-dibromo-5-toluene (4.96 g, 20 mmol) was dissolved in 150 ml of tetrachloromethane and then benzoyl peroxide (0.36 g, 1.5 mmol) and N-bromosuccinimide (3.74 g, 21 mmol) was added thereto, and the reaction mixture was heated under reflux for 24 hours. The reaction solution was then poured into water and extracted with methylene chloride. The organic compound was dried over magnesium sulfate and treated with dichloromethane / petroleum ether (v / v = 2: 3) was chromatographed on silica gel as a eluent, dried and steamed to give intermediate C (4.87 g, 74% yield) as a white solid.

References:

CN106946777,2017,A Location in patent:Paragraph 0060-0062

3,5-Dibromobenzyl bromide Related Search: