2:1 versus 1:1 Coupling of Alkylacetylenes with Secondary Amines: Selectivity Switching in 8-Quinolinolato Rhodium Catalysis
作者:Yoshihiko Morimoto、Moe Hamada、Shotaro Takano、Katsufumi Mochizuki、Takuya Kochi、Fumitoshi Kakiuchi
DOI:10.1021/acs.orglett.1c00094
日期:2021.5.21
Both 2:1 and 1:1 couplings of alkylacetylenes with secondary amines were achieved using 8-quinolinolato rhodium catalysts and CsF. The 2:1/1:1 selectivity was switched by choosing the reaction solvent. In DMA, an unprecedented 2:1 coupling reaction of alkylacetylenes with amines proceeded to give 2-aminodiene products. One-pot 2:1 coupling/reduction provided rapid access to various allylamines, while
烷基乙炔与仲胺的2:1和1:1偶合均使用8-喹啉基铑催化剂和CsF实现。通过选择反应溶剂来切换2:1/1:1的选择性。在DMA中,前所未有的烷基乙炔与胺的2:1偶联反应进行,得到了2-氨基二烯产物。一锅2:1偶联/还原提供了快速接触各种烯丙胺的功能,而一锅偶联/水解则提供了烯酮类产品。在甲苯中,在相对温和的条件下发生了反马尔可夫尼科夫胺化反应,生成了1:1的偶联产物。