Sahu, J.; Sahu, T. K.; Naik, S. K., Journal of the Indian Chemical Society, 1983, vol. 60, p. 861 - 863
作者:Sahu, J.、Sahu, T. K.、Naik, S. K.、Nayak, A.
DOI:——
日期:——
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作者:A. P. Molchanov、D. I. Sipkin、Yu. B. Koptelov、R. R. Kostikov
DOI:10.1023/a:1012465732305
日期:——
Heating of 6-aryl-1,5-diazabicyclo[3.1.0]hexanes in the presence of N-arylmaleimides gives rise to 2,9-diarylperhydropyrazolo[1,2-a]pyrrolo[3,4-c]pyrazole-1,3-diones. It is presumed that thermal cleavage of the C-N bond in the diaziridine fragment of the 6-aryl-1,5-diazabicyclo[3.1.0]hexanes results in formation of labile azomethinimines that react with N-arylmaleimides to afford the products of 1,3-dipolar cycloaddition. The rate of accumulation thereof depends only on the character of substituents in the aromatic ring of the 1,5-diazabicyclo[3.1.0]hexanes and is independent of maleimide. The thermal isomerization of 6-aryl-1.5-diazabicyclo[3.1.0]hexanes without 1,3-dipolarophiles yields the corresponding 2-pyrazolines.
Competition between cyclisation and bisimine formation in the reaction of 1,3-diaminopropanes with aromatic aldehydes
作者:Julie M. Locke、Renate Griffith、Trevor D. Bailey、Robyn L. Crumbie
DOI:10.1016/j.tet.2009.10.060
日期:2009.12
Condensation of 1,3-diamines with aldehydes or ketones gives rise to two major products, the hexahydropyrimidine and the bisimine. Experimental studies of the reaction between a range of aromatic aldehydes and 1,3-diaminopropane or 1,3-diamino-2-propanol establish that the hexahydropyrimidine is favoured by the less nucleophilic amine and by the presence of electron withdrawing groups on the aryl ring
Hexahydropyrimidines. III.<sup>1</sup> A Study of 2-Substituted 1,3-Bis(p-methoxybenzyl)hexahydropyrimidines and 2-Substituted 1,3-Bis(p-chlorobenzyl)hexahydropyrimidines as Transport Molecules for Tumor Inhibition<sup>2</sup>