22502-48-3Relevant articles and documents
Photochemical, Photophysical, and Theoretical Studies on Cyclobutanethiones: α-Cleavage Reactions
Rao, Bantu Nageshwer,Chandrasekhar, Jayaraman,Ramamurthy, Vaidhyanathan
, p. 745 - 751 (2007/10/02)
Photophysics and photochemistry of cyclobutanethiones 1-5 have been studied with the view to generalize the α-cleavage reactions of cyclobutanethiones.The above cyclobutanethiones possess a unit intersystem crossing efficiency from S1 to T
Thermotropic Liquid Crystals Containing the Dispirotetradecane Unit
Calaminus, W.,Voegtle, F.,Eidenschink, R.
, p. 1011 - 1014 (2007/10/02)
Several 3,11-disubstituted dispirotetradecane-7,14-dions were prepared and the cis/trans-isomers were separated.The trans-stereoisomers were converted into the gem-dihalide ketones and mono- and dithioketones.The phase transfer temperatures were
Strain-Assisted α-Cleavage Reactions of Thioketones: Cyclobutanethiones
Muthuramu, K.,Sundari, B.,Ramamurthy, V.
, p. 4482 - 4487 (2007/10/02)
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.