Stereoselective preparation of (E)-ε-nitro-β,γ-unsaturated methyl esters:: Amberlyst A 27, using microwave, as superior catalyst for the 1,6-conjugate addition of nitroalkanes to methyl 1,3-butadiene-1-carboxylate

被引:25
作者
Ballini, R [1 ]
Bosica, G [1 ]
Fiorini, D [1 ]
机构
[1] Univ Camerino, Dipartimento Sci Chim, I-62032 Camerino, MC, Italy
关键词
nitroalkanes; conjugate addition; microwave; catalysis; stereoselective;
D O I
10.1016/S0040-4039(01)01843-3
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
1,6-Conjugate addition of nitroalkanes to methyl 1,3-b-atadiene-1-carboxylate, performed with Amberlyst A 27, using microwaves and in the absence of any solvent, allows the prevalent formation of the beta,gamma -unsaturated adduct, over the alpha,beta -unsaturated one. The products were exclusively obtained as (E)-isomers. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:8471 / 8473
页数:3
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