Synthesis and biological activity of derivatives of pyrrolo-and pyrido[2,3-d]pyrimidine and pyrimido[4,5-b]azepine
作者:E. N. Dozorova、S. I. Grizik、I. V. Persianova、R. D. Syubaev、G. Ya. Shvarts、V. G. Granik
DOI:10.1007/bf00771771
日期:1985.2
transformations. Amidines Ia-c were obtained by reaction of lactim ethers (IIa-c) with cyanamide (III). The interaction of ethers IIa-c with III takes place extremely smoothly and under mild conditions, and amidines Ia-c are formed in high yield. Treatment of amidines Ia-c with concentrated HCI leads to the formation of the hydrochlorides of the N-carbamidoamidines (IVa-c), from which by the action of sodium ethoxide