A short, general, organoselenium-mediated synthesis of cyclic acetals
作者:Goverdhan Mehta、H. Surya Prakash Rao、K. Raja Reddy
DOI:10.1039/c39870000078
日期:——
Readily available substrates containing a strategically placed carbonyl group and two isolated double bonds can be coaxed into cyclicacetal formation in a single step employing phenylselenenyl chloride in aqueous acetonitrile.
DIBENZOFURAN DERIVATIVES AND DIBENZOTHIOPHENE DERIVATIVES
申请人:MERCK PATENT GMBH
公开号:US20210139451A1
公开(公告)日:2021-05-13
The invention relates to compounds of the formula I
in which groups and parameters that occur have the definitions given in Claim
1
, to the preparation thereof, to the use thereof as components in liquid-crystalline media and to electrooptical display elements comprising the liquid-crystalline media of the invention.
Dibenzofuran derivatives and dibenzothiophene derivatives
申请人:MERCK PATENT GMBH
公开号:US11236063B2
公开(公告)日:2022-02-01
Compounds of the formula I
in which groups and parameters that occur have the definitions given in the disclosure. Preparation methods for these compounds. Uses of the compounds as components in liquid-crystalline media. Electrooptical display elements comprising the liquid-crystalline media.
式 I 的化合物
其中出现的基团和参数的定义已在公开资料中给出。这些化合物的制备方法。这些化合物作为液晶介质成分的用途。包含液晶介质的电光显示元件。
Preparation of alpha Allyl Ketones from Allyl Alcohol and Ketones