Chiroptical properties of benzene chromophore in substituted 1,1-diphenylcyclopropanes

Autor:	H.M. Walborsky, K. Gawronska, D. Radocki, J. Gawrońiski
Rok vydání:	1993
Předmět:	Circular dichroism Stereochemistry Organic Chemistry Substituent Absolute configuration Chromophore Ring (chemistry) Catalysis Cyclopropane Inorganic Chemistry chemistry.chemical_compound Crystallography chemistry Molecule Physical and Theoretical Chemistry Cotton effect
Zdroj:	Tetrahedron: Asymmetry. 4:383-392
ISSN:	0957-4166
DOI:	10.1016/s0957-4166(00)86083-8
Popis:	The CD spectra of 29 derivatives of 1,1-diphenylcyclopropane of known absolute configuration have been measured. The minimum energy “perpendicular” conformation of these molecules follows from the MMX calculations as well as from available X-ray data. A contribution of substituents X and Y in the 2-position o-f the cyclopropane ring to the rotatory strength of the phenyl chromophores is evaluated and a simple rule relating the size and donor character of the substituent to the sign of the 1 L b and 1 L a Cotton effects is proposed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3d1466fb63189b1c6e91d74e32388825 https://doi.org/10.1016/s0957-4166(00)86083-8 Zobrazit plný text záznamu