Thermal Rearrangements of<i>N</i>-Aryl-1-alkynesulphenamides into Indoline-2-thiones
作者:J. -B. Baudin、M. Bekhazi、S. A. Julia、O. Ruel、R. L. P. De Jong、L. Brandsma
DOI:10.1055/s-1985-31400
日期:——
Reaction of bromomagnesium benzenamides with 1-alkynyl thiocyanates affords the title sulphenamides. On heating in benzene, these sulphenamides undergo [3.3]-sigmatropic rearrangements followed by cyclisation of the intermediate thioketenes yielding indoline-2-thiones.