Journal
JOURNAL OF SULFUR CHEMISTRY
Volume 39, Issue 4, Pages 422-434Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17415993.2018.1449844
Keywords
1,3-Oxathiolane; pyrolysis; sulfoxide; sulphone; X-ray structure
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Isomerization of 2-benzylidene-1,3-dioxolane to 3-phenylbutyrolactone occurs readily under flash vacuum pyrolysis (FVP) conditions. 2-Diphenylmethyl-1,3-oxathiolane and 2-benzyl-1,3-oxathiolane have been prepared and the latter compound has been oxidized to the corresponding sulfoxide, whose structure and conformation are examined by H-1 NMR, and to the sulfone whose X-ray structure is determined. 2-Benzylidene-1,3-oxathiolane is also prepared and the behavior of the three S-oxidized oxathiolane derivatives upon FVP is examined. While extrusion of SOn to give ethene and a carbonyl compound predominates in all three cases, the sulfoxide gives also bis(2-hydroxyethyl) disulfide, most likely formed via thiirane S-oxide and 1,2-oxathietane. [GRAPHICS] .
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