Journal of Organic Chemistry p. 4482 - 4487 (1983)
Update date:2022-08-04
Topics:
Muthuramu, K.
Sundari, B.
Ramamurthy, V.
Photochemical α-cleavage from the lowest triplet state (n?*,T1), 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 undergo 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. α-Cleavage processes in the case of cyclobutanethiones are not efficient and are often accompanied by side reactions.
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