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Synthesis and1H NMR Spectral Behavior of a Methano[20]annulenedione Derivative

Authors :
Hiroyuki Higuchi
Gaku Yamamoto
Yoshie Takai
Juro Ojima
Source :
Chemistry Letters. 21:875-878
Publication Year :
1992
Publisher :
The Chemical Society of Japan, 1992.

Abstract

A potential 18π-electron system, 11,16-dimethyl-12,14-bisdehydro-1,6-methano[20]annulene-7,20-dione was synthesized and its 1H NMR spectral behavior in CDCl3, CF3CO2D, and D2SO4 was studied. The energy barrier to the methylene flipping was highly dependent on the medium.

Subjects

Subjects :
Diketone
chemistry.chemical_compound
Bicyclic molecule
Computational chemistry
Chemistry
Stereochemistry
Proton NMR
General Chemistry
Nuclear magnetic resonance spectroscopy
Annulene
Methylene
Aliphatic compound
Derivative (chemistry)

Details

ISSN :
13480715 and 03667022
Volume :
21
Database :
OpenAIRE
Journal :
Chemistry Letters
Accession number :
edsair.doi...........a035abc27c0a30302fe7a6a9e1d558e3
Full Text :
https://doi.org/10.1246/cl.1992.875
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