Synthesis of vicinal (alkylamino)alkynylcyclopropanes from geminal alkynyl(chloro)cyclopropanes
作者:Valentin D. Gvozdev、Konstantin N. Shavrin、Mikhail P. Egorov、Oleg M. Nefedov
DOI:10.1016/j.mencom.2021.09.020
日期:2021.9
New N-Boc-alkyl(2-alkynylcyclopropyl)amines were synthesized from 1-alkynyl-1-chlorocyclopropanes and N-Boc- alkylamines under the action of ButOK in DMSO, the intermediates having been the corresponding conjugated alkynylcyclopropenes. The Boc-derivatives can be converted into free secondary 2-alkynylcyclopropylamines, as well as ββ-lithiated with subsequent alkylation.
以1-炔基-1-氯代环丙烷和N - Boc-烷基胺为原料,在二甲基亚砜的Bu t OK作用下合成了新型N -Boc-烷基(2-炔基环丙基)胺,中间体为相应的共轭炔基环丙烯。Boc 衍生物可以转化为游离的 2-炔基环丙胺仲胺,以及 ββ 锂化和随后的烷基化。