Synthesis of Spirocyclopropanated Analogues of Imidacloprid and Thiacloprid
作者:Farina Brackmann、Dmitrii S. Yufit、Judith A. K. Howard、Mazen Es-Sayed、Armin de Meijere
DOI:10.1002/ejoc.200400599
日期:2005.2
(8) was converted into spirocyclopropanated analogues 14-CP and 14-CT of the insecticide Thiacloprid (2) in six simple steps with overall yields of 24 % each, along with their regioisomers 13-CP and 13-CT in overall yields of 17 and 15 %, respectively. The spirocyclopropanated analogues 27-CP and 27-CT of the insecticide Imidacloprid (1) were prepared from 8 in five steps in an overall yield of 10 %