Xuxue Zhang, Mingsheng Wu, Juan Zhang and Song Cao
Org. Biomol. Chem., 2017,15, 2436-2442
DOI:
10.1039/C7OB00368D,
Paper
A novel and effective method for the construction of highly functionalized aminothiophenes via the cyclization of gem-difluoroalkenes with β-keto tertiary thioamides is described. The reactions proceed smoothly with the assistance of K2CO3 under transition-metal-free conditions, affording a variety of valuable N,N-disubstituted 2-aminothiophenes in moderate to good yields.