Multiple-photon chemistry in the benzophenone photoreduction during laser-jet photolysis: Effect of alcohol solvent on cross-coupling versus hydrogen abstraction of …

W Adam, B Walther

Index: Adam, Waldemar; Walther, Barbara Tetrahedron, 1996 , vol. 52, # 31 p. 10399 - 10404

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Citation Number: 9

Abstract

The ground state of the hydroxydiphenylmethyl radical (1) leads to benzpinacol (2) through head-to-head coupling and the diols 3 as cross-coupling product. In contrast. under the high- intensity conditions of the laser-jet photolysis. the excited radical 1∗ couples in the para position to afford the benzophenone derivatives 4 (head-to-tail coupling)(higher spin density at the para position/AM1 calculations). The major two-photon product is benzhydrol (5). ...