Photochemical Reactions. 153th communication. Photochemistry of acylsilanes: Photolyses and thermolyses of α, β??epoxy silyl ketones

ME Scheller, B Frei

Index: Scheller, Markus E.; Frei, Bruno Helvetica Chimica Acta, 1992 , vol. 75, # 1 p. 69 - 78

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Citation Number: 9

Abstract

Abstract The photolyses and thermolyses of the α, β-epoxy silyl ketones 5 and 6 are described. On n, π*-excitation, the silyl ketones 5 and 6 were transformed to the ketone 7 and the ketene 8 in quantitative yield. The formation of 8 may be explained by initial cleavage of the C (α)[BOND] O bond and subsequent C (1)[RIGHTWARDS ARROW] C (2) migration of the (t-Bu) Me 2 Si group. In contrast to the acylsilanes 5 and 6, the photolyses ...