Aldehyde- and Ketone-Induced Tandem Decarboxylation-Coupling (Csp3−Csp) of Natural α-Amino Acids and Alkynes
摘要:
An interesting aldehyde- and ketone-induced intermolecular tandem decarboxylation-coupling (Csp(3)-Csp) catalyzed by copper with use of natural alpha-amino acids as starting materials is developed under neutral conditions with the production of CO2 and H2O as the only by products. Various functionalized nitrogen-containing compounds were obtained by this method. In these processes, interesting regioselectivites of the alkylation were observed, which has been rationalized by the relative stability of proposed resonance structures based on computation methods.
Aldehyde- and Ketone-Induced Tandem Decarboxylation-Coupling (Csp<sup>3</sup>−Csp) of Natural α-Amino Acids and Alkynes
作者:Hai-Peng Bi、Qingfeng Teng、Min Guan、Wen-Wen Chen、Yong-Min Liang、Xiaojun Yao、Chao-Jun Li
DOI:10.1021/jo902319h
日期:2010.2.5
An interesting aldehyde- and ketone-induced intermolecular tandem decarboxylation-coupling (Csp(3)-Csp) catalyzed by copper with use of natural alpha-amino acids as starting materials is developed under neutral conditions with the production of CO2 and H2O as the only by products. Various functionalized nitrogen-containing compounds were obtained by this method. In these processes, interesting regioselectivites of the alkylation were observed, which has been rationalized by the relative stability of proposed resonance structures based on computation methods.
Deaminative Arylation and Alkenyaltion of Aliphatic Tertiary Amines with Aryl and Alkenylboronic Acids via Nitrogen Ylides
作者:Jianke Su、Chengbo Li、Xinyuan Hu、Yu Guo、Qiuling Song
DOI:10.1002/anie.202212740
日期:2022.12.23
arylation and alkenylation of tertiary amines with aryl and alkenylboronic acids is enabled by difluorocarbene under transition-metal-free conditions. This protocol represents a novel reaction mode which succeeded in the construction of Csp3−Csp2 bonds via an in situ formed nitrogen ylide from tertiary amines (propargylamines, allylamines and 1H-indol-3-yl methane amines) and difluorocarbene with aryl and
在无过渡金属的条件下,二氟卡宾能够实现叔胺与芳基和烯基硼酸的有效且通用的脱氨芳基化和烯基化。该协议代表了一种新的反应模式,它通过叔胺(炔丙基胺、烯丙基胺和 1H-吲哚-3-基甲烷胺)和二氟卡宾原位形成的氮叶立德成功地构建了 C sp 3 -C sp 2键与芳基和烯基硼酸。