Circular Dichroism of 9,10-Dihydrophenanthrene Derivatives Reveals both the Absolute Configuration and Conformation: A Novel Approach to Mislow's Helicity Rule
作者:Jacek Gawroński、Piotr Grycz、Marcin Kwit、Urszula Rychlewska
DOI:10.1002/1521-3765(20020916)8:18<4210::aid-chem4210>3.0.co;2-7
日期:2002.9.16
The absolute configuration and the conformation of 9,10-trans-disubstituted 9,10-dihydrophenanthrenes, known chiral metabolites of phenanthrene-9,10-oxide, have been determined by circular dichroism. The absolute configuration assignment is based on the sign of the long-wavelength Cotton effect (A-band), which is conformation invariant and originates from benzylic chirality. This provides a new interpretation
通过圆二色性测定了9,10-反式-二取代的9,10-二氢菲,即菲-9,10-氧化物的手性代谢物的绝对构型和构象。绝对构型分配是基于长波长棉花效应(A波段)的符号,该符号是构象不变的,且起源于苄基手性。这为9,10-二氢菲生色团的情况提供了米索联苯螺旋速率规则的新解释。B带棉花效应的迹象反映了联苯发色团在9,10-二氢菲中的构象。结果表明9,10-二氢菲的手性性质的起源与5,6-反式-二取代的1,3-环己二烯的手性性质密切相关。