Zinc tetrafluoroborate catalyzed Mannich-type reaction of aldimines and silyl enol ethers in aqueous medium
作者:Brindaban C Ranu、Sampak Samanta、Sankar K Guchhait
DOI:10.1016/s0040-4020(01)01177-2
日期:2002.1
The use of zinc tetrafluoroborate as a catalyst in Mannich-type addition of silyl enol ethers to aldimines in aqueous THF provides β-amino ketones or β-amino esters in high yields. A one-pot reaction of an aldehyde, amine and silylenolate also works well.
Synthesis of hexahydrophenanthridines via the tandem reaction of benzynes
作者:Wen-Juan Li、Ji-Xin Pian、Cheng-Zhi Gu、Bin Dai、Lin He
DOI:10.1016/j.tet.2020.131372
日期:2020.8
A tandem insertion-cyclization reaction between carbocyclic β–amino ketones and benzynes has been described, producing hexahydrophenanthridines in moderate to high yields.