Synthesis of 6-cyano- and 6-carbamoyl-purines and 6-carbamoyl-1,2-dihydropurines from [MeCNMe]O<sub>3</sub>SCF<sub>3</sub>and diaminomaleonitrile
作者:Brian L. Booth、M. Fernanda Proença
DOI:10.1039/c39810000788
日期:——
Diaminomaleonitrile reacts with N-methylace-tonitrilium trifluoromethanesulphonate to give, after base treatment, the 5-amino-4-(cyanoformimidoyl)imidazole (4) which forms 6-cyanopurines with carboxylic acid anhydrides, and with aldehydes, ketones, 1,2- and 1,3- diketones, and keto-esters gives 6-carbamoyl-1,2-dihydro-purine derivatives from which 6-carbamoylpurines can be obtained.
二氨基马来腈与N-甲基乙酰腈三氟甲磺酸盐反应,经碱处理后生成5-氨基-4-(氰基氨基甲酰基)咪唑(4),该化合物与羧酸酐反应生成6-氰嘌呤,与醛、酮、1,2-和1,3-二酮及酮酯反应可得到6-氨基甲酰-1,2-二氢嘌呤衍生物,从中可以获得6-氨基甲酰嘌呤。