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 Magnesium, bromo(4-bromophenyl)-
18620-02-5

Magnesium, bromo(4-bromophenyl)- synthesis

5synthesis methods
-

Yield:-

Reaction Conditions:

with hydrogenchloride;magnesium in diethyl ether

Steps:

R.32 Reference Example 32
Reference Example 32 A solution of 4-bromophenylmagnesium bromide prepared from p-dibromobenzene (25.0 g), magnesium (2.43 g) and diethyl ether (250 ml) was added dropwise to a solution of diethyl oxalate (32.5 g) in diethyl ether (250 ml) at -78° C. under a nitrogen atmosphere. After stirring for 1 hour, the reaction mixture was allowed to warm to 0° C., and 1N HCl was added. The diethyl ether layer separated, washed with aqueous sodium bicarbonate and with saturated aqueous sodium chloride, dried (MgSO4), and concentrated. The residue was subjected to column chromatography on silica gel to obtain an oil from a fraction eluted with ethyl acetate-hexane (1:15, v/v).

References:

Takeda Chemical Industries, Ltd. US6251926, 2001, B1

Magnesium, bromo(4-bromophenyl)- Related Search: