70244-24-5Relevant academic research and scientific papers
PHOTOCHEMICAL REACTIONS OF SOME AROMATIC THIONES WITH BIS(TERT-BUTYLTHIO)ETHYNE. ISOLATION AND PROPERTIES IF THIETES, THE PHOTOCHEMICAL (2+2)-CYCLOADDUCTS AND THEIR ISOMERIC α,β-UNSATURATED DITHIOESTERS
Brouwer, A. C.,George, A. V. E.,Bos, H. J. T.
, p. 83 - 90 (2007/10/02)
Photochemical reaction of some aromatic thiones 2 with bis(tert-butylthio)ethyne 1 affords the α,β-unsaturated dithio esters 4 via a (2+2)-cycloaddition reaction of the triplet-excited thiones 2 with acetylene 1.In one case, a (2+2)-cycloadduct, thiete 3o, was isolated.Spectroscopic investigations revealed that in solution there is an equilibrium between this thiete 3o and the isomeric α,β-unsaturated dithio ester 4o.The generality of this equilibrium phenomenom is examined and discussed with respect to the substituents of the C=C-C=S moiety of the α,β-unsaturated dithio ester 4.
