Structures of two cyclopropane derivatives: cis- and trans-caronic acid
β Scribed by Jessen, S. M.
- Book ID
- 114508628
- Publisher
- International Union of Crystallography
- Year
- 1992
- Tongue
- English
- Weight
- 453 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0108-2701
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π SIMILAR VOLUMES
The variations of the geometrical (bond lengths and angles), electronic (dipole moment magnitude and orientation) and chemical (acidity) data whi-h are experimentally observed when going from the cis to the frets isomer of nitrous acid are fully reproduced within the fmmework of semi-empiricnl CNDO/
The infrared spectra of liquid cis-and truns-1,2-diiodocyclopropane were measured from 4000 to 200 Em-'. Raman spectra between 4000 and 50 cm-' of the two compounds as liquids and of the solid cis isomer were also obtained. All of the 21 normal vibrations of the two molecules were convincingly assig
The infrared and Raman spectra of cis-and trans-1,2-dibromocyclopropane have been measured in the liquid phase from 4000 to 50 cm-'. An assignment of all fundamentals of the two isomers is proposed which is in accord with all the well established assignments of simple bromocyclopropanes and disubsti
Β±)-cis-or (Β±)-trans-4-Methylpipecolic acid and ester derivatives can be obtained directly by addition of electrophiles to a-lithiated N-Boc 4-methylpiperidine.