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Reexamination of the traditional Baylis-Hillman reaction
被引:24
|作者:
Shi, M
[1
]
Li, CQ
[1
]
Jiang, JK
[1
]
机构:
[1] Chinese Acad Sci, Shanghai Inst Organ Chem, Organomet Chem Lab, Shanghai 200032, Peoples R China
来源:
关键词:
Baylis-Hillman reaction;
Lewis base;
methyl vinyl ketone (MVK);
ethyl vinyl ketone (EVK);
DABCO;
conjugated addition;
DMAP;
D O I:
10.1016/S0040-4020(03)00041-3
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
In the Baylis-Hillman reaction of arylaldehydes with methyl vinyl ketone (MVK), we found that, besides the normal Baylis-Ellman adduct 1, the diadduct 2 can also be formed at the same time and the yield of 2 can reach to 55% if increasing the amount of methyl vinyl ketone. But for ethyl vinyl ketone (EVK), methyl acrylate or acrylonitrile, only the normal Baylis-Hillman adduct 4, 7 or 8 was obtained, respectively. The substituent's effects and Lewis base effects were also examined and a plausible reaction mechanism was proposed for the formation of 2. (C) 2003 Elsevier Science Ltd. All rights reserved.
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页码:1181 / 1189
页数:9
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