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DETERMINATION OF 3-BOND H-1, H-1 COUPLING-CONSTANTS BETWEEN THE OLEFINIC PROTONS IN CYCLOALKENES BY MEANS OF H-1 CW OFF-RESONANCE C-13 NMR-SPECTROSCOPY
被引:8
|作者:
RADEGLIA, R
POLESCHNER, H
HAUFE, G
机构:
[1] UNIV POTSDAM,KAI EV,PROJEKTGRP NATURSTOFFE,O-1532 KLEINMACHNOW,GERMANY
[2] UNIV MUNSTER,INST ORGAN CHEM,W-4400 MUNSTER,GERMANY
关键词:
OFF-RESONANCE;
2ND-ORDER EFFECTS;
VICINAL H-1;
H-1 COUPLING CONSTANTS;
(E)/(Z) CONFIGURATION OF DOUBLE BONDS;
CYCLOALKENES;
D O I:
10.1002/mrc.1260310706
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
The H-1 CW off-resonance decoupled C-13 NMR spectra of (E)- and (Z)-cycloalkenes (C5-C-12) were measured. The higher order C-13 NMR multiplets obtained for the unsaturated carbons allow the determination of the vicinal H-1,H-1 coupling constant between the vinylic protons and thus the assignment of the configuration of the -CH2CH=CHCH2- fragment.
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页码:639 / 641
页数:3
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