共 36 条
Enantioselective addition of phenylacetylene to aldehydes catalyzed by a D-glucosamine-derived sulfonamide-titanium complex
被引:10
|作者:
Bauer, Tomasz
[1
]
Smolinski, Slawomir
[1
]
Gawel, Przemyslaw
[1
]
Jurczak, Janusz
[1
,2
]
机构:
[1] Warsaw Univ, Dept Chem, PL-02093 Warsaw, Poland
[2] Polish Acad Sci, Inst Organ Chem, PL-01224 Warsaw, Poland
关键词:
D-Glucosamine;
Aldehydes;
Phenylacetylene;
Enantioselective;
CARBONYL GROUPS;
AMIDE) LIGANDS;
ALKYNYLATION;
ALKYNYLZINC;
DERIVATIVES;
DIETHYLZINC;
KETONES;
D O I:
10.1016/j.tetlet.2011.07.051
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
We present the synthesis of beta-hydroxy sulfonamides derived from D-glucosamine and their application as ligands in titanium tetraisopropoxide promoted enantioselective addition of phenylacetylene to benzaldehyde and selected aromatic and aliphatic aldehydes. The N-3,5-bis(trifluoromethyl)benzenesulfonamido-D-glucosamine derivative was chosen as the most efficient ligand for this addition. The reaction is highly enantioselective for several aromatic aldehydes and enantiomeric excesses up to 92% were obtained. (C) 2011 Elsevier Ltd. All rights reserved.
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页码:4882 / 4884
页数:3
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