期刊论文

中文

衡阳师范学院学报

1673-0313

2016

37

03

1-3

10.13914/j.cnki.cn43-1453/z.2016.03.001

(2015－291－363):湖南省普通高校教学改革研究资助项目 :湖南省重点建设学科和有机化学教学团队资助项目

本校为第一机构

芳烃 ArCOR [R：H (1),Me (2),OH (3),OMe (4)]的构象分析表明,苯甲醛的羰基与苯环共平面、乙酰苯的羰基与苯环平面成90°、苯甲酸和苯甲酸甲酯的羰基与苯环平面分别成15°时,原子(基团)的空间作用能最低成优势构象,间位具有较高电荷密度,在亲电取代反应中－COR为间位定位基。

The conformational analysis of the ArCOR(R:H,Me,OH,OMe)showed that carbonyl and benzene in ArCOR is characterized by dihedral angle,which is the angle between the O=C-C(Ar)plane and the benzene ring plane.When the dihe-dral angle is 0°in benzaldehyde,90°in acetophenone,and 15°in benzoic acid and benzoic acid methyl ester,respectively are more stable.Regions of high electron density are located meta position of the-COR group.Because substitution in ArCOR oc-curs primarily at positions meta ...