87894-66-4Relevant articles and documents
Thiopyranobenzothiophens. Synthesis of 1-Phenyl-3H-thiopyranobenzothiophen-3-thione 9,9-Dioxide and Related Compounds
Buggle, Katherine,Ghogain, Una Ni,Nangle, Michael,MacManus, Patrick
, p. 1427 - 1429 (2007/10/02)
The title compound (3a) was prepared by the reaction of 2-benzoylbenzothiophen-3(2H)-one 1,1-dioxide (1) with tetraphosphorus decasulphide, acetonitrile, and sodium hydrogen carbonate.The structure was confirmed by an alternative synthesis from ethyl 3-benzothienylacetate.The isomeric 4-phenyl-2H-thiopyranobenzothiophen-2-thione 5,5-dioxide (2a) and a number of analogues of (3a) and (2a) were prepared.