Pyridylseleno group in organic synthesis. Preparation and oxidation of. alpha.-(2-pyridylseleno) carbonyl compounds leading to. alpha.,. beta.-unsaturated ketones …

…, H Owada, K Terao, S Uemura, M Okano

Index: Toshimitsu, Akio; Owada, Hiroto; Terao, Keiji; Uemura, Sakae; Okano, Masaya Journal of Organic Chemistry, 1984 , vol. 49, # 20 p. 3796 - 3800

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Citation Number: 55

Abstract

a-(2-Pyridylseleno) carbonyl compounds (A) were prepared by the reaction of ketones or aldehydes with 2-pyridylselenenyl bromide under various conditions (acidic, basic, or after conversion to silyl enol ethers) in good to excellent yields. Oxidation of A thus prepared affords a $-unsaturated carbonyl compounds in excellent yields even in the cases where satisfactory results were not obtained by the oxidation of the corresponding a- ...