2-Zincoethylzincation of 2-Alkynylamines and 1-Alkynylphosphines Catalyzed by Titanium(IV) Isopropoxide and Ethylmagnesium Bromide
作者:Rita Kadikova、Ilfir Ramazanov、Oleg Mozgovoi、Azat Gabdullin、Usein Dzhemilev
DOI:10.1055/s-0037-1612009
日期:2019.2
Titanium(IV) isopropoxide and ethylmagnesium bromide catalyzed reaction of 2-alkynylamines with Et2Zn, followed by deuterolysis/hydrolysis and iodinolysis, affords substituted (Z)-pent-2-en-2,5-d 2-1-amines, (Z)-pent-2-en-1-amines (65–88%), and substituted (Z)-2,5-diiodopent-2-en-1-amines (55–63%). It is suggested that the reaction proceeds through the formation of cyclic organotitanium derivatives. The
异丙醇钛 (IV) 和溴化乙基镁催化 2-炔胺与 Et2Zn 的反应,然后进行氘化/水解和碘解,得到取代的 (Z)-pent-2-en-2,5-d 2-1-胺,(Z )-pent-2-en-1-胺 (65–88%) 和取代的 (Z)-2,5-diiodopent-2-en-1-胺 (55–63%)。表明该反应是通过形成环状有机钛衍生物进行的。在催化量的 Ti(O-iPr)4 和 EtMgBr 存在下,1-炔基膦和 Et2Zn 之间的反应产生具有高区域选择性和立体选择性的三取代 1-烯基氧化膦。