Aza Wittig-type reaction between the iminophosphorane derived from 3-amino-4-phenylthiazole-2(3H)-thione and iso(thio)cyanates: Preparation of mesoionic thiazolo[2,3-b]-1,3,4-thiadiazoles and N,N-bisheteroarylamines

Article abstract of DOI:10.1016/S0040-4020(01)90791-4

Aza Wittig-type reaction of iminophosphorane 1 derived from 3-amino-4-phenylthiazole-2(3H)-thione with several types of iso(thio)cyanates has been studied. The reaction of 1 with aromatic iso(thio)cyanates leads to thiazolo[2,3-b]-1,3,4-thiadiazoles 2 whi