Efficient One-Pot Synthesis of Cyclopenta[b]thiophen-1-ones and 1,3-Di(2-thiophenyl)propan-1-ones from Thiophenes
作者:Ivan L. Baraznenok、Valentine G. Nenajdenko、Elizabeth S. Balenkova
DOI:10.1055/s-1997-1207
日期:1997.4
The reaction of N,N-dimethylacrylamide/triflic anhydride complex with substituted thiophenes led to the corresponding cyclopenta[b]thiophen-1-ones and 1,3-di(2-thiophenyl)propan-1-ones. The application of 2-bromo-N,N-dimethylacrylamide in this reaction allows 2-bromo-substituted five- or seven-membered thiophene-fused cyclic ketones to be obtained.
N,N-二甲基
丙烯酰胺/
三氟乙酸酐复合物与取代
噻吩的反应产生了相应的环戊[b]
噻吩-1-酮和1,3-二(2-
噻吩基)
丙酮。该反应中使用2-
溴-N,N-二甲基
丙烯酰胺能够获得2-
溴取代的五元或七元
噻吩融合环酮。