Chiral-optical properties of six- and seven-membered benzothioamides
The chiral-optical properties of R-(+)-4-methyl-3,4-di-hydroisoquinoline-1-thione and R-(-)-3-methyl-, R-(+)-4-methyl-, and S-(+)-5-methyl-2,3,4,5-tetrahydrobenz(c)-azepine-1-thiones wee studied. A significant increase in the intensities of the Cotton effects (CE), particularly for the CE due to the n ..-->.. ..pi..* transition in the benzothioamide chromophore, is observed on passing from six-membered to seven-membered benzothiolactams with the same orientation of the asymmetric center relative to the chromophore. The signs of the CE due to the n ..-->.. ..pi..* transition in the benzothioamide chromophore and the ..pi.. ..-->.. ..pi..* transition in the aromatic chromophore at 250-280 nm (the /sup 1/L/sub b/ band) correlate with the type of conformation of the thiolactam ring.
- Research Organization:
- M.V. Lumonosov Moscow State Univ., USSR
- OSTI ID:
- 6250593
- Journal Information:
- Chem. Heterocycl. Compd. (Engl. Transl.); (United States), Journal Name: Chem. Heterocycl. Compd. (Engl. Transl.); (United States) Vol. 21:9; ISSN CHCCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360603 -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTRA
AMIDES
AROMATICS
ASYMMETRY
AZAARENES
AZINES
CHIRALITY
COLOR
CONFORMATIONAL CHANGES
DICHROISM
ELECTRONIC STRUCTURE
ENERGY-LEVEL TRANSITIONS
HETEROCYCLIC COMPOUNDS
LACTAMS
LASER MATERIALS
MAGNETIC CIRCULAR DICHROISM
MAGNETO-OPTICAL EFFECTS
MASS SPECTRA
MATERIALS
MOLECULAR STRUCTURE
NMR SPECTRA
OPTICAL ACTIVITY
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
ORGANOLEPTIC PROPERTIES
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
PYRIDINES
QUINOLINES
SPECTRA
SPECTRAL SHIFT
ULTRAVIOLET SPECTRA
VOIGT EFFECT