Abstract tert-Butyl N-[1-(hydroxymethyl) cyclopropyl] carbamate (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 ...
