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Ring expansion by sulphur migration: Synthesis of 2-alkylidene-1,4-benzodithians and 1,4-benzodithiins

✍ Scribed by Philip Blatcher; Stuart Warren; Smollie Ncube; Andrew Pelter; Keith Smith

Publisher: Elsevier Science
Year: 1978
Tongue: French
Weight: 183 KB
Volume: 19
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)91533-3

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✦ Synopsis

Reaction of 2-(l-hydroxyalkyll-1,3-bensodithioles (1) with thionyl chloridetriethylamine gives high yields of 2-alkylidene-3-substituted benzodithians, and 2,3-substituted benzodithiins on treatment with acid.

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