JOURNAL OF INCLUSION PHENOMENA AND MOLECULAR RECOGNITION IN CHEMISTRY
|
1991年
/
11卷
/
01期
关键词:
MACROCYCLE;
SCHIFF BASE;
IMIDAZOLIDINE RING CONTRACTION;
D O I:
10.1007/BF01073685
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Cyclocondensation of benzene-1,3-dicarbaldehyde and 3-azapentane-1,5-diamine in acetonitrile leads to isolation of an 18-membered imidazolidine-containing Schiff base macrocycle rather than the anticipated 24-membered tetraimine Schiff base macrocycle. This has occurred as a consequence of internal nucleophilic addition of the secondary amine functions across adjacent azomethine bonds. The X-ray crystal structure of the imidazolidine-containing Schiff base macrocycle is reported.