# Strain-Assisted \alpha-Cleavage Reactions of Thioketones: Cyclobutanethiones

Muthuramu, K and Sundari, B and Ramamurthy, V (1983) Strain-Assisted \alpha-Cleavage Reactions of Thioketones: Cyclobutanethiones. In: Journal of Organic Chemistry, 48 (24). pp. 4482-4487.

 PDF ep.pdf Restricted to Registered users only Download (706Kb) | Request a copy

## Abstract

Photochemical \alpha -cleavage from the lowest triplet state $(n\pi^*, T_1)$, resulting in the generation of a diradical intermediate, appears to be general for cyclobutanethiones. The diradical intermediate derived from 1,3-dithione is observed to undergoes ring expansion to carbene or close to either dithione or dithiolactone. The Photochemical behavior reported here for cyclobutanethiones is different from that of the corresponding cyclobutanones. \alpha-Cleavage processes in the case of cyclobutanethiones are not efficient and are often accompanied by side reactions.

Item Type: Journal Article Copyright of this article belongs to American Chemical Society. Division of Chemical Sciences > Organic Chemistry 14 Jul 2008 19 Sep 2010 04:47 http://eprints.iisc.ernet.in/id/eprint/15020