ABSTRACT Substituted2-aminothiazoles have been synthesized from α-nitro-epoxides, cyanamide, and sodium sulfide through a facile, three-component, and ecofriendly protocol with good to excellent yields. This reaction was achieved at room temperature without any additives. A possible mechanism has also been proposed. GRAPHICAL ABSTRACT
Palladium(0) Catalysed Conversion of α-Nitroepoxides into 1,2-Diketones
作者:Yashwànt D. Vankar、Surendra P. Singh
DOI:10.1246/cl.1986.1939
日期:1986.11.5
A variety of α-nitroepoxides have been found to undergo conversion to the corresponding 1,2-diketones with Pd(PPh3)4. Two examples form α-nitroketones instead of 1,2-diketones.
A multi-component synthesis of N-substituted 2-amino-3-cyano pyrroles from nitroepoxides, amines and malononitrile has been demonstrated. The reaction proceeded well for a wide range of nitroepoxides and amines under mild conditions without transition metal catalysis via the formation of three new bonds.