Evaluation of an aza-Michael approach for the synthesis of 3,3-dimethyl-2-aminocyclobutane-1-carboxylic acid

被引:5
|
作者
Charnay-Pouget, Florence [1 ]
Frank, Michael [2 ]
Baltaze, Jean-Pierre [1 ]
Pereira, Elisabeth [2 ]
Aitken, David J. [1 ]
机构
[1] Univ Paris 11, CNRS, ICMMO, UMR 8182, 15 Rue Georges Clemenceau, F-91405 Orsay, France
[2] Univ Blaise Pascal, Clermont Univ, CNRS, Lab SEESIB,UMR 6504, F-63177 Clermont Ferrand, France
关键词
Aza-Michael reaction; cyclobutenecarboxylate; beta-amino acid; conjugate addition; BETA-AMINO ACIDS; PARALLEL KINETIC RESOLUTION; HELICAL SECONDARY STRUCTURE; ASYMMETRIC-SYNTHESIS; CONJUGATE ADDITION; LITHIUM AMIDES; SIDE-CHAINS; PEPTIDES; CHEMISTRY; 3-ALKYL-CISPENTACIN;
D O I
10.3998/ark.5550190.0013.509
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The aza-Michael addition reaction of a dibenzylic amide anion with t-butyl 3,3-dimethylcyclobutene-1-carboxylate was investigated as a route to the title compound, a cyclic beta-amino acid. In analogy with the known 5- and 6-membered ring homologues, the addition reaction proceeds smoothly, but with moderate diastereomeric and enantiomeric selectivities. The trans isomer of the title beta-amino acid was obtained, for the first time, with a modest enantiomeric excess.
引用
收藏
页码:80 / 93
页数:14
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