Synthesis And Novel Stereochemical Results In The Lithium–Ammonia Reduction Of Some 4-Alkyl-Δ<sup>1(9)</sup>-2-octalones
作者:Edward Piers、Wynona M. Phillips-Johnson、Christian Berger
DOI:10.1139/v75-177
日期:1975.5.1
reagents to the cross-conjugated dienones 13 and 14, were subjected to lithium–ammonia reduction. Interestingly, these reductions produced, in each case, a considerably higher proportion (13–35%) of the corresponding cis-fused 2-decalone (27–31, inclusive) as compared with that normally formed in the alkali metal – ammonia reduction of Δ1(9)-2-octalones. The results are qualitatively explained in terms
4-烷基-Δ1(9)-2-辛酮 7-11,包括,通过向交叉共轭二烯酮 13 和 14 共轭添加适当或甘铜酸盐试剂而制备,进行锂-氨还原。有趣的是,与通常在碱金属中形成的还原相比,这些还原在每种情况下都产生了相当高的比例(13-35%)相应的顺式稠合 2-十酮(27-31,含) Δ1(9)-2-辛酮。结果根据罗宾逊最初提出的建议进行了定性解释。