One-Pot Multistep Synthesis of Trisubstituted Alkenes from N-Tosylhydrazones and Alcohols
作者:Yunyang Wei、Qiang Sha
DOI:10.1055/s-0034-1378231
日期:——
Abstract A one-pot procedure for the synthesis of trisubstituted alkenes from N-tosylhydrazones and alcohols is reported. This procedure combines the aerobic oxidation reaction and Wittig reaction in one pot, which avoids using of environmentally toxic oxidants and isolation of the intermediates. The simple procedure makes it very attractive for the synthesis of trisubstituted alkenes when alcohols are used
Copper(I)-Catalyzed Wittig Olefination Reactions of<i>N</i>-Tosylhydrazones with Trifluoromethylketones
作者:Qiang Sha、Yunyang Wei
DOI:10.1002/cctc.201300583
日期:2014.1
iodide‐catalyzed Wittig olefination reactions of N‐tosylhydrazones with trifluoromethylketones are reported. This procedure provides an efficient method for the synthesis of various trifluoromethyl‐substituted alkenes in moderate to good yields (up to 89 % yield) and good stereoselectivity (up to 93 % E‐selectivity). To the best of our knowledge, it is the first report of a Wittig reaction of N‐tosylhydrazones
申请人:Gyogyszerkutato Inteezet/Pharmaceutical Research Institute
公开号:US04806685A1
公开(公告)日:1989-02-21
A novel 1,1,2-triphenylpropene derivative, namely: ##STR1## acts on the endocrine system of rats. It exerts oestrogenic or antioestrogenic effects of varying strength in rats, and furthermore inhibits the growth of the mammary tumor induced by 7,12-dimethyl-benz(a)anthracene in rats.