Electrochemical generation of chiral oxazolidin-2-ones anions: a new procedure for the highly diastereoselective conjugate addition to nitroalkenes

被引:16
作者
Feroci, M
Inesi, A [1 ]
Palombi, L
Rossi, L
机构
[1] Univ Aquila, Dipartimento Chim Ingn Chim & Mat, I-67040 Laquila, Italy
[2] Univ Roma La Sapienza, Dipartimento Ingn Chim Mat Mat Prime & Met, I-00161 Rome, Italy
关键词
D O I
10.1016/S0957-4166(01)00385-8
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A mild and efficient electrochemical alternative to classical base-catalyzed conjugate addition of nitrogen nucleophiles is reported here. The cleavage of the carbamic N . H bond of Evans' chiral auxiliaries can be very efficiently performed by electrolysis under galvanostatic control and the resulting naked anions used for highly, diastereoselective conjugate addition to nitroalkenes. The degree of stereoselectivity was shown to depend on the steric hindrance of the group at the ring C(4) of the starting oxazolidin-2-one. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:2331 / 2335
页数:5
相关论文
共 16 条
[1]   1,2-amino alcohols and their heterocyclic derivatives as chiral auxiliaries in asymmetric synthesis [J].
Ager, DJ ;
Prakash, I ;
Schaad, DR .
CHEMICAL REVIEWS, 1996, 96 (02) :835-875
[2]  
Ager DJ, 1997, ALDRICHIM ACTA, V30, P3
[3]   Fast nitroaldol reaction using powdered KOH in dry media [J].
Ballini, R ;
Bosica, G ;
Parrini, M .
CHEMISTRY LETTERS, 1999, (10) :1105-1106
[4]   Stereochemically defined C-substituted glutamic acids and their derivatives, part 9.: Michael addition reactions between chiral Ni(II) complex of glycine and 3-(trans-enoyl)oxazolidin-2-ones.: A case of electron donor-acceptor attractive interaction-controlled face diastereoselectivity [J].
Cai, CZ ;
Soloshonok, VA ;
Hruby, VJ .
JOURNAL OF ORGANIC CHEMISTRY, 2001, 66 (04) :1339-1350
[5]   The O-2-/CO2 system as mild and safe carboxylating reagent synthesis of organic carbonates [J].
Casadei, MA ;
Cesa, S ;
Feroci, M ;
Inesi, A ;
Rossi, L ;
Moracci, FM .
TETRAHEDRON, 1997, 53 (01) :167-176
[6]  
Casadei MA, 1999, NEW J CHEM, V23, P433
[7]   NEW PROCEDURE FOR THE DIRECT GENERATION OF TITANIUM ENOLATES - DIASTEREOSELECTIVE BOND CONSTRUCTIONS WITH REPRESENTATIVE ELECTROPHILES [J].
EVANS, DA ;
URPI, F ;
SOMERS, TC ;
CLARK, JS ;
BILODEAU, MT .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1990, 112 (22) :8215-8216
[8]   ASYMMETRIC DIELS-ALDER CYCLO-ADDITION REACTIONS WITH CHIRAL ALPHA, BETA-UNSATURATED N-ACYLOXAZOLIDINONES [J].
EVANS, DA ;
CHAPMAN, KT ;
BISAHA, J .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1988, 110 (04) :1238-1256
[9]   ENANTIOSELECTIVE ALDOL CONDENSATIONS .2. ERYTHRO-SELECTIVE CHIRAL ALOL CONDENSATIONS VIA BORON ENOLATES [J].
EVANS, DA ;
BARTROLI, J ;
SHIH, TL .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1981, 103 (08) :2127-2129
[10]  
Feroci M, 2001, EUR J ORG CHEM, V2001, P2765