Reaction of β-Nitro Enamines with Isocyanates, Isothiocyanates and Dimethyl Acetylenedicarboxylate
作者:Takao Tokumitsu
DOI:10.1246/bcsj.59.3871
日期:1986.12
β-Nitro enamines (1) reacted with isocyanates and isothiocyanates to give β-(substituted carbamoyl) and β-(substituted thiocarbamoyl) β-nitro enamines, respectively. The reaction of 1 with benzoyl isothiocyanate gave β-(benzoylthiocarbamoyl) β-nitro enamines (8) and/or a mixture of 8 and 4(1H)-pyrimidinethione derivatives (9) which were cyclization products of 8. The isolated 8 afforded the corresponding