Synthesis of some new chiral bifunctional o-hydroxyarylphosphonodiamides and their application as ligands in Ti(IV) complex catalyzed asymmetric silylcyanation of aromatic aldehydes，成果详细信息-中国科技论文在线

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Synthesis of some new chiral bifunctional o-hydroxyarylphosphonodiamides and their application as ligands in Ti(IV) complex catalyzed asymmetric silylcyanation of aromatic aldehydes

周正洪， Ke He ， Zhenghong Zhou ， Lixin Wang ， Kangying Li ， Guofeng Zhao ， Qilin Zhou and Chuchi Tang

Tetrahedron 60 (2004) 10505-10513，-0001，（）：

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摘要/描述

Some new chiral bifunctional o-hydroxyarylphosphonodiamides were synthesized starting from (+)-cis-1,2,2-trimethylcyclopentane-1,3-diamine and the absolute configuration of the phosphorus atom was determined by X-ray diffraction analysis. Excellent enantioselectivity (up to 98% ee) was achieved in asymmetric silylcyanation of aromatic aldehydes using a chiral titanium complex formed in situ from Ti(OiPr)4 and o-hydroxyarylphosphonodiamide as the catalyst.

关键词: Chiral cyclophosphonodiamide ， Asymmetric silylcyanation ， Catalysis ， Enantioselectivity ， Aromatic aldehyde

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