4,5,8a-Triphenyl-perhydro-pyrimido[4,5-d]pyrimidine-2,7-dione monohydrate.

ABSTRACT: The title compound, C(24)H(22)N(4)O(2)·H(2)O, was synthesized by the trimethyl-chloro-silane-catalysed reaction between urea, benzaldehyde and acetophenone. The organic mol-ecule comprises two fused tetra-hydro-pyrimidinone rings with phenyl substituents at the 4- and 5-positions on the tetra-hydro-pyrimidinone rings and a third phenyl substituent at the ring junction 8-position. The 4- and 5-substituted phenyl rings are inclined at a dihedral angle of 22.72?(11)° to one another and make angles of 47.95?(7) and 65.76?(7)° with the third phenyl substituent. In the crystal structure, inter-molecular N-H?O contacts link pyrimido[4,5-d]pyrimidine mol-ecules into centrosymmetric dimers. Additional N-H?O and O-H?O hydrogen bonds involving the water mol-ecule generate a three-dimensional network.

SUBMITTER: Zhu Y 

PROVIDER: S-EPMC2979643 | biostudies-literature | 2010 May

REPOSITORIES: biostudies-literature