Magnetic circular dichroism of di-substituted benzenes and substituted pyridines
نویسندگان
چکیده
منابع مشابه
Correlation of the Circular Dichroism of Unsubstituted and Ring - Substituted Chiral Phenylcarbinamines with Their Absolute Configurations
The sign of the 1~ Cotton effects (CEs) at about 250-27D nm of the benzene chromophore of unsubstituted chiral phenylcarbinamines and their salts is determined by vibronic borrowing from the lBb-allowed transition at shorter wavelength. For these chiral phenylcarbinamines and their salts of the same generic absolute configuration, the sign of their lLb CEs is the same. On ring substitution, how...
متن کاملSynthesis of substituted pyridines and pyridazines via ring closing metathesis.
RCM can be used to make aromatic heterocycles, namely pyridines and, for the first time, pyridazines; the key step after RCM involves elimination of sulfinate to provide the aromatic system.
متن کاملEfficient, mild and completely regioselective synthesis of substituted pyridines.
Addition of Grignard reagents to pyridine N-oxides in THF at low temperature (-78 to -20 degrees C) and treatment with TFAA provides an efficient general procedure for synthesis of substituted pyridines. The method is compatible with a range of functional groups such as esters, halogens and nitriles.
متن کاملMulti Peak ESCA Bands in Substituted Benzenes and Heterocyclic Compounds
The ESCA spectra of several substituted benzenes and heterocyclic compounds were obtained. Multi peak structures are observed in the various energy regions. The effects are generally interpreted as due to shake up phenomena involving intramolecular charge-transfer transitions between a "donor" and an "acceptor" group in the molecule. A quantitative model for such kind of phenomena is given. It ...
متن کاملPd-mediated synthesis of substituted benzenes fused with carbocycle/heterocycle.
A new Pd-catalyzed one-pot multicomponent coupling reaction for the construction of benzene ring fused with carbocycle or heterocycle under a Cu-free condition is described.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1976
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.25.371