Kinetic resolution in asymmetric anti aldol reactions of branched and straight chain racemic 2-phenylsulfanyl aldehydes: asymmetric synthesis of cyclic ethers and lactones by phenylsulfanyl migration
Kinetic resolutions in anti aldol reactions with racemic 2-phenylthio aldehydes: asymmetric synthesis of cyclic ethers and lactones with phenylthio migration
作者:Kelly Chibale、Stuart Warren
DOI:10.1016/s0040-4039(00)74262-6
日期:1992.7
Kinetic resolutions in Lewis acid catalysed asymmetric anti aldol reactions of the boron enolate of imide (2) with racemic 2-phenylthio aldehydes (3a) – (3c) give good yields of anti,anti aldols (7). Synthesis of homochiral cyclic ethers (4a) – (4c) and (5a) – (5c), and a simple novel route to homochiral lactones (6a) – (6c) are described.
Kinetic resolution in asymmetric anti aldol reactions of branched and straight chain racemic 2-phenylsulfanyl aldehydes: asymmetric synthesis of cyclic ethers and lactones by phenylsulfanyl migration
作者:Kelly Chibale、Stuart Warren
DOI:10.1039/p19960001935
日期:——
The kinetic resolution of branched and straight chain 2-phenylsulfanyl aldehydes by the Lewis acid-catalysed asymmetric anti aldol reaction followed by reduction to single enantiomers of 1,3-diols and/or acid-catalysed cyclisation with PhS migration provides a route to enantiomerically pure cyclic ethers and lactones with full stereochemical control.