Tetrahedron Letters

First isolation of 1, 2-dithietan-3-one from α-dithiolactone

T Shigetomi, K Okuma, Y Yokomori

Index: Shigetomi, Toshiyuki; Okuma, Kentaro; Yokomori, Yoshinobu Tetrahedron Letters, 2008 , vol. 49, # 1 p. 36 - 38

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Citation Number: 7

Abstract

Treatment of α-dithiolactone 6 with ethoxycarbonylformonitrile oxide 7 resulted in the formation of 1, 2-dithietan-3-one 4. Compound 4a was oxidized with m-CPBA to give 4, 4-di- tert-butyl-1, 2-dithietan-3-one 1-oxide 5a. The reaction of 4a with triphenylphosphine afforded the corresponding α-thiolactone 10.