Aspects of the Reduction of Double Bonds Using Cob (I)alamin as Catalys
作者:Albert Fischli
DOI:10.1002/hlca.19820650839
日期:1982.12.15
The olefinic system in 3β-methoxy-4-cholesten-6 a-ol (2) is reduced using cob (I)alamin (1(I); see Scheme 1) as catalyst, aqueous acetic acid as solvent and metallic zinc as electron source (cf. Schemes 2 and 3). Experimental evidence for an attack of 1(I) on both faces of the double bond is presented. By the same catalyst (1 R)-10, 10-dimethyl-2-pinene- 10-carbonitrile (9) is first transformed to