84331-45-3Relevant academic research and scientific papers
ESR IDENTIFICATION AND CONFORMATION OF A PERSISTENT FREE RADICAL IN THE (4+2)-CYCLOADDITION REACTION OF XANTHENETHIONE WITH PHENYLALLENE
Kamphuis, J.,Visser, R.G.,Bos, H.J.T.,Mackor, A.,Huizer, A.H.
, p. 2299 - 2302 (2007/10/02)
In the (4+2)-cycloaddition reaction of xanthenethione 1 with phenylallene 2 to give amongst other, thiopyran derivative 6 and thiopyran 7 as the isolable product, a ketyl radical has been found and identified by ESR spectroscopy.Its conformation and role in the formation of compound 6 are discussed.
THERMAL ADDITION OF XANTHENETHIONE TO ALLENES: "A CONCERTED TWO STEP" (?2s+?2s+?2s)-CYCLOADDITION
Kamphuis, J.,Visser, R. G.,Bos, H. J. T.
, p. 3603 - 3604 (2007/10/02)
(2+2)- and (4+2)-cycloadducts are formed by thermal reaction of xanthenethione with allenes.Activation parameters for this "concerted two step" (?2s+?2s+?2s)-reaction are presented.
