Selenobenzophenones and Diazoalkanes: Isolation of Tetraarylethylenes by the Reaction of Benzophenone Hydrazones with Diselenium Dibromide

K Okuma, K Kojima, K Oyama, K Kubo…

Index: Okuma, Kentaro; Kojima, Kazuki; Oyama, Kosuke; Kubo, Kento; Shioji, Kosei European Journal of Organic Chemistry, 2004 , # 4 p. 820 - 825

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Citation Number: 8

Abstract

Abstract The reaction of selenobenzophenones with diazomethane afforded the corresponding diarylethylenes and symmetrical olefins. The reaction with diaryldiazomethanes gave three different types of tetraarylethylenes. This reaction proceeded through 1, 3, 4-selenadiazoline intermediates, and retrocyclization was observed. The formation of 1, 3, 4-selendiazolines was independently confirmed by the ...