In:
Zeitschrift für Naturforschung C, Walter de Gruyter GmbH, Vol. 32, No. 7-8 ( 1977-8-1), p. 563-566
Abstract:
A downfield shift of proton signals up to 9 ppm is induced in the 1 H NMR spectra of juvenile hormone I (methyl 3,11-dimethyl-10,11-cis-epoxy-7-ethyl-2-trans, 6-trans-tridecadienoate) and III (methyl 10,11-epoxy-2-trans, 6-trans-farnesoate) by the lanthanide complex Eu(fod) 3 . A plot of induced shift vs the ratio of [LSR]/[substrate] shows a good linear correlation for the range 0.3 -1.0 mole ratio. Highest shifts are induced for the protons H-10 and H-2 adjacent to the two Lewis base groups of the hormone. Resolution due to induced shift decreases for the other signals with increasing distance of protons from the two coordination sites.
Type of Medium:
Online Resource
ISSN:
1865-7125
,
0939-5075
DOI:
10.1515/znc-1977-7-814
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
1977
detail.hit.zdb_id:
2078107-6
SSG:
12
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