Hydrothiolation and Intramolecular Cyclization Sequence for the Synthesis of 1,3-Oxathiine Frameworks
作者:Yuta Nishina、Junya Miyata
DOI:10.1055/s-0032-1316563
日期:2012.8
prepared via the sequential addition and intramolecular cyclization of thiosalicylic acid onto alkynes. A substituent on the alkyne and the presence of a palladium catalyst can allow product regioselectivity control. This strategy is applicable to the synthesis of heterocyclescomprising sulfur and oxygen atoms, namely 3,1-benzoxathiines, without any unwanted byproduct. 1,3-Oxathiine frameworks can be