Enantioselective synthesis of spiro[4.5]decanone with 2-(S)-methoxy-1,4-dibromobutane
作者:Juan Miguel Garro Galvez、Paul Angers、Persephone Canonne
DOI:10.1016/s0040-4039(00)76641-x
日期:1994.5
The reaction of 3-methyl-2-cyclohexen-1-one with 2-(S)-methoxy-1,4-dibromobutane (2) produced spiro[4.5]decanone 3, a key intermediate for the synthesis of spirovetivanes, with regiodifferentiation and stereoselection. Subsequent addition of diisopropoxydimethyltitanium to the carbonyl group furnished compound 6 with diasterofacial selectivity. The same selectivity was observed in the subsequent catalytic
3-甲基-2-环己烯-1-酮与2-(S)-甲氧基-1,4-二溴丁烷(2)的反应生成螺[4.5]癸酮3,螺环戊烯合成的关键中间体,具有区域分化作用和立体选择。随后将二异丙氧基二甲基钛加到羰基上提供具有非对面选择性的化合物6。在随后的催化氢化中观察到相同的选择性。