共 36 条
Enantioselective Addition of Phenylacetylene to Aldehydes Catalyzed by Polymer-Supported Titanium(IV) Complexes of β-Hydroxy Amides
被引:5
|作者:
Hui, Xin-Ping
[1
]
Huang, Lu-Ning
[1
]
Li, Ya-Min
[1
]
Wang, Ren-Lin
[1
]
Xu, Peng-Fei
[1
]
机构:
[1] Lanzhou Univ, State Key Lab Appl Organ Chem, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China
来源:
基金:
中国国家自然科学基金;
关键词:
enantioselective addition;
polymer-supported catalyst;
titanium tetraisopropoxide;
diethylzinc;
beta-hydroxy amide;
ASYMMETRIC TRANSFER HYDROGENATION;
ENANTIO-SELECTIVE ADDITION;
AROMATIC-ALDEHYDES;
TERMINAL ALKYNES;
RECOVERABLE CATALYSTS;
PROPARGYLIC ALCOHOLS;
ALDOL REACTION;
LIGANDS;
ALKYNYLATION;
KETONES;
D O I:
10.1002/chir.20749
中图分类号:
R914 [药物化学];
学科分类号:
100701 ;
摘要:
A series of polymer-supported chiral beta-hydroxy amides and C(z)-symmetric beta-hydroxy amides have been synthesized and successfully used for the enantioselective addition of phenylacetylene to aldehydes. High yields (up to 93%) and enantioselectivities (up to 92% ee) were achieved by using polymer-supported chiral hydroxy amide 4b. The resin 4b is reused four times, giving the product with enantioselectivity 80% ee. Fortunately, it is found that this heterogonous system is suitable not only for aromatic aldehydes but also aliphatic aldehyde. Chirality 22:347-354, 2010. (C) 2009 Wiley-Liss, Inc.
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页码:347 / 354
页数:8
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