| Literature DB >> 11578236 |
A R Katritzky1, H H Odens, S Zhang, C J Rostek, O W Maender.
Abstract
Nucleophilic additions of alpha-mercaptoalkanoate esters and beta-mercaptoalkanoate acids to benzoquinone diimines, followed by cyclization with trifluoroacetic acid or 1,3-dicyclohexylcarbodiimide (DCC), provide novel, high-yielding syntheses of 2H-1,4-benzothiazin-3(4H)-ones (3a-f) and 2,3-dihydro-1,5-benzothiazepin-4(5H)-ones (5a-c), respectively.Entities:
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Year: 2001 PMID： 11578236 DOI： 10.1021/jo0101959
Source DB: PubMed Journal: J Org Chem ISSN： 0022-3263 Impact factor: 4.354