A new chiral catalytic source with an N–PO structural framework containing a proximal hydroxyl group for the borane-mediated asymmetric reduction of prochiral ketones
作者:Deevi Basavaiah、Gone Jayapal Reddy、Vanampally Chandrashekar
DOI:10.1016/j.tetasy.2003.11.002
日期:2004.1
3S,5R)-2-Hydroxy-2,6,6-trimethylbicyclo[3.1.1]heptan-3-yloxy]-1,3-diaza-2-phospha-2-oxo-3-phenylbicyclo[3.3.0]octane has been successfully employed as a novel chiral catalytic source (4 mol %) for borane-mediated asymmetric reduction of prochiral ketones thus providing the resulting secondary alcohols with up to 96% enantiomeric excess.
(5 S)-2-[(1 R,2 R,3 S,5 R)-2-羟基-2,6,6-三甲基双环[3.1.1]庚基-3-基氧基] -1,3-二氮杂-2-磷-2-氧代-3-苯基二环[3.3.0]辛烷已成功地用作新型手性催化源(4摩尔%),用于硼烷介导的前手性酮的不对称还原,从而使生成的仲醇具有较高的收率。对映体过量为96%。