Über in 11-Stellung amino-substituierte Dibenzo[b,f]-1, 4-thiazepine und -oxazepine. 9. Mitteilung über siebengliedrige Heterocyclen
作者:J. Schmutz、F. Künzle、F. Hunziker、R. Gauch
DOI:10.1002/hlca.19670500131
日期:——
Neuroleptics are found in the 11-amino substituted dibenzo[b,f]-1, 4-thiazepine and dibenzo[b,f]-1, 4-oxazepine series III. They may be synthesized by aminolysis of the iminochlorides VI and/or by Bischler-Napieralski ring closure of the urea II with POCl3.
Photoisomerization of the benzisothiazol-3(2H)-ones (1) gives the dibenzo[b,f][1,4]thiazepin-10(11H)-ones (4) Probably via homolytic cleavage of the S–N bond [(1)→(2)], cyclization of the biradical [(2)→(3)], followed by the formation of an aromatic ring together with 1,7-hydrogen transfer [(3)→(4)].