Spectroscopic studies on effects of triptycyl group on structures and reactivities of triplet arylcarbenes

被引：0
|
作者：
Tomioka, H [1 ]
Nakajima, J [1 ]
Mizuno, H [1 ]
Iiba, E [1 ]
Hirai, K [1 ]
机构：
[1] Mie Univ, Fac Engn, Dept Chem Mat, Tsu, Mie 5148507, Japan
来源：
CANADIAN JOURNAL OF CHEMISTRY | 1999年 / 77卷 / 5-6期
关键词：
steric protection; stability of triplet carbenes; electron spin resonance; laser flash photolysis; structure-reactivity relationship;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A series of triplet 9-triptycyl(aryl)carbenes, where aryl groups are phenyl, 1- and 2-naphthyl, and 9-anthryl, is generated by photolysis of the corresponding diazomethanes and observed directly by spectroscopic means. Their structures are characterized by electron spin resonance (ESR) spectroscopy in a 2-methyltetrahydrofuran matrix at 77 K, and the reactivities are investigated by laser flash photolysis in degassed benzene solution at room temperature. Comparison of the data with other arylcarbenes bearing a series of substituents, i.e., hydrogen, phenyl, naphthyl, and anthryl groups, revealed an interesting relationship between structures and reactivities of triplet arylcarbenes.
引用
收藏
页码：1066 / 1076
页数：11
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