共 21 条
Remote electronic control of the ligand in the enantioselective palladium-catalyzed allylic alkylation with chiral oxazolinylpyridines
被引:21
作者:
Chelucci, G
[1
]
Deriu, SP
[1
]
Saba, A
[1
]
Valenti, R
[1
]
机构:
[1] Univ Sassari, Dipartimento Chim, I-07100 Sassari, Italy
关键词:
D O I:
10.1016/S0957-4166(99)00116-0
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
New chiral oxazolinylpyridines bearing electron-donating and withdrawing groups lin the 4-position of the pyridine ring have been prepared and assessed in the enantioselective palladium catalyzed allylic substitution of 1,3-diphenylprop-2-enyl acetate with dimethyl malonate. The electronic properties of substituents strongly affect the catalytic activity and only slightly affect the enantioselectivity of the substitution reaction. Enantioselectivity up to 93% was obtained. (C) 1999 Elsevier Science Ltd. All rights reserved.
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页码:1457 / 1464
页数:8
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