Tetraphenylcyclobutadiene derivatives. VI. An investigation of the intermediacy of tetraphenylcyclobutadiene
VR Sandel, HH Freedman
Index: Sandel,V.R.; Freedman,H.H. Journal of the American Chemical Society, 1968 , vol. 90, # 8 p. 2059 - 2069
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Citation Number: 11
Abstract
Abstract: Tetraphenylcyclobutadiene has been postulated to be an intermediate in the pyrolysis reactions of (4-bromo-l, 2, 3, 4-tetraphenyl-cis, cis-l, 3-butadienyl) dimethyltin bromide (1). In the present work, a kinetic investigation confirmed the existence of an intermediate in these reactions, and a label-scrambling scheme established that the intermediate was a four-carbon cycle with two chemically equivalent adjacent ring bonds. ...
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