A series of 6-aminopyrimidines are cyanoacetylated with a mixture of cyanoaceticacid and acetic anhydride. When pyrimidin-4(3H)-ones are used as substrates, the substitution occurs at C-5, however, when the substrates are substituted pyrimidines at the C-2 and C-4, the cyanoacetylation takes place at the exocyclic amino group.
2-Cyano-<i>N</i>-(4,6-dimethoxypyrimidin-2-yl)acetamide: complex sheets built from N—H...O and C—H...O hydrogen bonds
作者:Jaime A. Gálvez、Jairo Quiroga、Justo Cobo、Christopher Glidewell
DOI:10.1107/s010827011003619x
日期:2010.10.15
Molecules of the title compound, C(9)H(10)N(4)O(3), (I), are linked into complex sheets by a combination of one N-H...O hydrogen bond and two C-H...O hydrogen bonds. Comparisons are drawn between (I) and some related compounds in respect of both their molecular conformations and their hydrogen-bonding arrangements.