Synthesis of benzo[b]thiepins, a class of 12π-electron heterocycles
- 1 January 1972
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 22,p. 1232-1233
- https://doi.org/10.1039/c39720001232
Abstract
3,4-Dimethoxycarbonyl-5-pyrrolidin-1-ylbenzo[b]thiepin has been prepared in a one-step synthesis by cycloaddition of 3-pyrrolidin-1-ylbenzo[b]thiophen (Ia) to dimethyl acetylenedicarboxylate; upon being heated, benzo[b]thiepins of this type rearrange to give naphthalenes and upon oxidation they yield thermally stable 1,1-dioxides.Keywords
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