Structure and spectroscopy of imidazo[1,2-α]imidazoles and imidazo[1,2-α]benzimidazoles

被引：7
|
作者：
Mas, T
Claramunt, RM [1 ]
Santa María, MD
Sanz, D
Alarcón, SH
Pérez-Torralba, M
Elguero, J
机构：
[1] Univ Nacl Educ Distancia, Fac Ciencias, Dept Quim Organ & Biol, Senda Rey 9, E-28040 Madrid, Spain
[2] Ctr Quim Organ Manuel Lora Tamayo, E-28006 Madrid, Spain
来源：
ARKIVOC | 2002年
关键词：
imidazo[1,2-a]imidazoles; imidazo[1,2-a]benzimidazoles; spectroscopy; structure;
D O I：
10.3998/ark.5550190.0003.507
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Two azapentalenes containing fused imidazoles have been synthesized and their NMR (solution and solid state) and UV properties recorded. Tautomerism in the case of imidazo[1,2-a] benzimidazole (9H tautomer) and the structure of the cations resulting from protonation in both cases have been determined. Ab initio calculations (HF/6-311G**) confirm the greater stability of 9H over 1H-imidazo[1,2-a] benzimidazole tautomer.
引用
收藏
页码：48 / 61
页数：14
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