C-13 NMR-STUDIES OF DIANIONS OF UNSATURATED CARBOXYLIC-ACIDS

被引：16

作者：

AURELL, MJ

GIL, S

MESTRES, R

PARRA, M

TORTAJADA, A

机构：

[1] Departament de Química Orgànica, Universitat de València, Burjassot, València

来源：

TETRAHEDRON | 1994年 / 50卷 / 17期

关键词：

D O I：

10.1016/S0040-4020(01)90421-1

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

C-13 NMR Spectra of the dianions Li-2-n resulting from double deprotonation of unsaturated carboxylic acids 1 to 6 by lithium dialkylamides, are examined. Higher field resonance for C-2 than for C-4 atoms are observed, which reveal higher electron density at C-2 than at C-4, in agreement with the kinetic alpha-regioselectivity exhibited by these dianions on reaction with electrophiles.

引用

页码：5109 / 5118

页数：10

共 36 条

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