Synthesis of ureas, amidines, and guanidines of the pyhimido[1,2-a]benzimidazole series
作者:M. F. Gordeev、Z. K. Dem'yanets、M. N. Bochkareva、V. A. Dorokhov
DOI:10.1007/bf00959727
日期:1991.12
The reaction of derivatives of 2-aminopyrimido[1,2-a]benzimidazole (APB) with isocyanates or dimethylacetamide dimethylacetals yielded ureas and amidines of the title series. The corresponding guanidines were synthesized by reaction of borylated APB with carbodiimides via boron chelates.