Efficient One-Pot Synthesis of Dithieno (dibenzothieno)-Fused Cycloheptanones, Tropones, and Cyclooctanones

VG Nenajdenko, IL Baraznenok…

文献索引：Nenajdenko, Valentine G.; Baraznenok, Ivan L.; Balenkova, Elizabeth S. Journal of Organic Chemistry, 1998 , vol. 63, # 18 p. 6132 - 6136

全文：HTML全文

被引用次数: 19

摘要

The reactions of α, β-unsaturated amide/triflic anhydride complexes (generated in situ from the corresponding amides and triflic anhydride) with dithiophenes and dithienylmethanes proceed as tandem alkylation-Vilsmeier-Haack acylation to form dithieno-and dibenzothieno- fused cycloheptanones and cyclooctanones in moderate to good yields. The reactions of 2- bromo-N, N-dimethylacrylamide/triflic anhydride complex allow preparation of tropones in ...