摘要
Two new chiral phosphine ligands,1,4∶3,6-dianhydro-2,5-O-dideoxy-2,5-bis(dipheny-phosphinoxy)-L-iditol and 1,4∶3,6-dianhydro-2,5-O-dideoxy-2,5-bis(dipheny-phosphinsulphur)-L-iditol were prepared from D-mannitol.Palladium catalytic systems formed with these ligands in situ were used as asymmetric homogenous catalysts for hydroesterification of styrene,giving(R)-2-phenyl propionate in 16.9 and 9.2% ee values,respectively.
Two new chiral phosphine ligands,1,4∶3,6-dianhydro-2,5-O-dideoxy-2,5-bis(dipheny-phosphinoxy)-L-iditol and 1,4∶3,6-dianhydro-2,5-O-dideoxy-2,5-bis(dipheny-phosphinsulphur)-L-iditol were prepared from D-mannitol.Palladium catalytic systems formed with these ligands in situ were used as asymmetric homogenous catalysts for hydroesterification of styrene,giving(R)-2-phenyl propionate in 16.9 and 9.2% ee values,respectively.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2004年第1期131-132,共2页
Chemical Research and Application
基金
国家自然科学基金资助项目(29933050
40175029)
南京气象学院自然基金资助项目。
