Reactive-state spin-dependent diastereoselective photoisornerization of trans,trans-2,3-diphenylcyclopropane-1-carboxylic acid derivatives included in zeolites

被引：14

作者：

Sivaguru, J ^{[1
]}

Shichi, T ^{[1
]}

Ramamurthy, V ^{[1
]}

机构：

[1] Tulane Univ, Dept Chem, New Orleans, LA 70118 USA

来源：

ORGANIC LETTERS | 2002年 / 4卷 / 24期

关键词：

D O I：

10.1021/ol026695l

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The asymmetric induction facilitated by a chiral auxiliary during the photoisomerization of trans, trans-2,3-diphenylcyclopropane derivatives depends on the medium (solution vs zeolite) and the reactive state (singlet vs triplet). Within zeolites, direct excitation most likely proceeds via a zwitterionic intermediate, while triplet sensitization most likely proceeds via a diradical intermediate.

引用

页码：4221 / 4224

页数：4

共 17 条

[11] Absolute rate constants for SN1-like ionization reactions in zeolites:: Determination of zeolite ionizing power [J].