An umpolung approach to amides via hypervalentiodine-mediatedoxidative rearrangement of N–H ketimines under mild reaction conditions is described. This strategy provides target amides with excellent selectivity in good yields. In addition, preliminary mechanistic studies demonstrated that the migration preference depends on both steric and electronic effects of the migrating groups.
申请人:POSTECH Research and Business Development Foundation 포항공과대학교 산학협력단(220040433361) BRN ▼506-82-07303
公开号:KR20160059189A
公开(公告)日:2016-05-26
본 발명은 유기 아자이드 화합물로부터 질소에 치환기가 없는 이민을 발생시키고, 그와 아실 주개와의 반응을 통해 엔아마이드 화합물을 합성하는 방법에 관한 것이다. 본 발명의 제조 방법을 이용하면, 적절한 촉매를 사용하여 알파 수소를 가진 유기 아자이드로부터 연속한 질소 제거 및 1,2-수소 옮김 반응을 통해 질소에 치환기가 없는 이민을 생성하고, 이 이민과 아실 주개를 반응시켜 엔아마이드 화합물을 합성할 수 있다.
This invention is directed to a tetrahydro-indazole cannabinoid modulator compound of formula I:
and a method for use in treating, ameliorating or preventing a cannabinoid receptor mediated syndrome, disorder or disease.
α-tertiary primary amines via photocatalytic radicalcoupling of native C(sp3)–H substrates with N-unsubstituted ketimines is reported. LiBr was used as a hydrogen atom transfer reagent to cleave C(sp3)–H bonds to get alkyl radicals. The in situ-generated HBr can then serve as a Bronsted acid to activate N-unsubstituted ketimines readily for single-electron reduction to deliver α-amino radicals. As a consequence
Development of Novel Catalytic Direct Syntheses of N-Unsubstituted Ketimines and Their Applications to One-Pot Reactions
作者:Hiroyuki Morimoto、Takashi Ohshima、Yuta Kondo
DOI:10.1055/a-2131-3448
日期:2024.3
Herein, we summarize our recent efforts toward developing catalytic methods for the synthesis of N-unsubstituted ketimines and their applications to one-pot reactions for producing various nitrogen-containing compounds. This account provides detailed background, optimization, scope, and mechanistic information. We hope this work will stimulate future studies on the implementation of N-unsubstituted