A NEW NMR TECHNIQUE FOR MEASURING THE GROUND-STATE POPULATIONS OF FORMATE ESTERS - POLAR APROTIC-SOLVENTS FAVOR THE S-CIS (E)-ISOMER OF TERT-BUTYL FORMATE

被引：16

作者：

JUNG, ME

GERVAY, J

机构：

[1] Department of Chemistry and Biochemistry, University of California, Los Angeles

来源：

TETRAHEDRON LETTERS | 1990年 / 31卷 / 33期

关键词：

D O I：

10.1016/S0040-4039(00)97706-2

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A new NMR technique for measuring the conformational population of t-butyl formate in a rapidly equilibrating mixture (3JCH averaging) has been developed and used to show that polar aim)tic solvents favor the E-isomer. © 1990.

引用

页码：4685 / 4688

页数：4

共 17 条

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[12] NUCLEAR MAGNETIC-RESONANCE STUDY OF EXCHANGING SYSTEMS .10. ROTATIONAL BARRIERS TO TRANS-CIS ISOMERIZATION IN ESTERS
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[13] CONFORMATIONS OF ESTER GROUP
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NAKANISHI, H
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[14] EMPIRICAL PARAMETERS OF POLARITY OF SOLVENTS
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[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 1965, 4 (01) : 29 - +
[15] Reichardt C., 1988, SOLVENTS SOLVENTS EF
[16] BARRIERS TO ROTATION ADJACENT TO DOUBLE-BONDS .3. THE C-O BARRIER IN FORMIC-ACID, METHYL FORMATE, ACETIC-ACID, AND METHYL ACETATE - THE ORIGIN OF ESTER AND AMIDE RESONANCE
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LAIDIG, KE
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1987, 109 (20) : 5935 - 5943
[17] [No title captured]

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