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A proton magnetic resonance study of isomeric alkylidencyanoesters
Author(s) -
Giralt Ernest,
López Francisco,
Alvarez Mercedes
Publication year - 1975
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270071204
Subject(s) - proton magnetic resonance , proton , solvent , chemical shift , chemistry , resonance (particle physics) , cis–trans isomerism , double bond , nuclear magnetic resonance , computational chemistry , stereochemistry , organic chemistry , physics , atomic physics , nuclear physics
Ethyl 2‐cyano‐3‐methyl‐4‐phenyl‐2‐pentenoate was obtained as a mixture of two geometric isomers. An aromatic solvent induced shift experiment and calculations of the difference in the chemical shifts of methyl protons linked to the double bond lead to the assignation of the geometry of both isomers.