A convergent total synthesis of methoxatin

JB Hendrickson, JG DeVries

Index: Hendrickson, James B.; deVries, Johannes G. Journal of Organic Chemistry, 1982 , vol. 47, # 6 p. 1148 - 1150

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Citation Number: 18

Abstract

When 2 was treated with 5 equiv of sulfur in refluxing xylene for 2 h, 2 was completely consumed. Several products were detected by preparative thin-layer chro- matography on silica gel eluted with methylene chloride, but only thione 9 was isolated in sufficient yield (70%) for characterization. Not only had tellurium-sulfur exchange occurred, but the bipyranylidene structure had reverted to the thione 9.g The susceptibility of bipyranylidenes to add sulfur and ...