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