Reactions of N-sulphinylamines and di-iminosulphur derivatives with acylketens
Abstract
The reactions of N-sulphinylmines with benzoylketen and with 2-carbonyl-1-tetralone (2b), generated in situ via thermolysis of the corresponding furandiones, gave [2 + 4] cycloadducts [1,2,3-oxathiazin-4(3H)-one 2-oxides (3)] in high yields. Similar treatment of di-iminosulphur derivatives with the keten (2b) led to 1-hydroxy-2-naphthamide derivatives as the main products.