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 4-Benzyloxybromobenzene
6793-92-6

4-Benzyloxybromobenzene synthesis

13synthesis methods
-

Yield: 100%

Reaction Conditions:

with potassium carbonate in acetonitrile for 6 h;

Steps:

34.A
Intermediate 34; (+/-)-3-(4-Hydroxy-phenyl)-2-methyl-propionic acid methyl ester; Step A; 4-Bromophenol (3.55 g, 20.5 mmol) is dissolved in acetonitrile (50 mL). Powdered potassium carbonate (3.86 g, 27.9 mmol) is added while stirring, followed by dropwise addition of benzyl bromide (2.4 mL, 20.2 mmol). The mixture is vigorously stirred under nitrogen for 6 h. Filtration and concentration yielded 4-benzyloxy-bromobenzene 32 (5.52 g, quant.) as an oil that slowly solidified: 1H-NMR (400 MHz, CDCl3) δ = 7.37, (m, 7H), 6.87 (m, 2H), 5.07 (s, 2H).

References:

IRM LLC WO2007/56497, 2007, A1 Location in patent:Page/Page column 32

4-Benzyloxybromobenzene Related Search: