A. Padwa, J. Ginn, M. Mcclure
Nov 18, 1999
Citations
0
Influential Citations
16
Citations
Journal
Organic letters
Abstract
[formula: see text] The dimethyl(methylthio)sulfonium tetrafluoroborate induced cyclization of various bis(methylsulfanyl) carbonyl compounds is described. The reaction proceeds by methylthiolation of the thioacetal group to give a thionium ion which undergoes subsequent cyclization with the neighboring carbonyl group. This is followed by an elimination reaction to furnish the furan ring.