1, 2??Diarylethanols by Alternative Regioselective Reductive Ring??Opening of 2, 3??Diaryloxiranes

…, MT Lopardo, P Lupattelli

Index: Blasio, Nadia Di; Lopardo, Maria Teresa; Lupattelli, Paolo European Journal of Organic Chemistry, 2009 , # 6 p. 938 - 944

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Citation Number: 3

Abstract

Abstract Non-symmetrical trans-2, 3-diaryloxiranes have been regioselectively opened by catalytic hydrogenation over Pd/C, NaBH 4/Pd and [Cp 2 TiCl]/H 2 O. Although in the catalytic hydrogenation reactions the epoxides were mainly opened at the β-carbon with respect to the substituted aryl ring in all cases, with the [Cp 2 TiCl]/H 2 O system the regioselectivity was affected by the electronic properties of the aryl residues, the epoxides ...