2-Amino-5-imino-4,5-dihydrothiazoles: Synthesis by Reaction of Isocyanides with 2-Amino-3-aza-1-thiabutadienes and Base-Induced Rearrangement into Imidazolines or Diazolidines

Article abstract of DOI:10.1021/jo00293a011

The reaction of isocyanides R³NC with 2-amino-3-aza-1-thiabutadienes 3 gives the 2-amino-5-imino-4,5-dihydrothiazoles 4.The rearrangement of 4 (R² = H) was induced by 1,5-diazabicyclo<4.3.0>non-5-ene and leads to 4H-imidazoline-5-thi