Rac-Ethyl 4-Hydroxy-6-(2-Hydroxyphenyl)-2-Oxo-4-(Trifluoromethyl)Perhydropyrimidin E-5-Carboxylate

In the title compound, C(14)H(15)F(3)N(2)O(5), prepared by reaction of 2-hydroxybenzaldehyde, ethyl 4,4,4-trifluoro-3-oxobutanoate and urea, the tetrapyrimidine ring adopts a half-chair conformation. The crystal structure is stabilized by five intermolecular hydrogen bonds, three O-H center dot center dot center dot O and two N-H center dot center dot center dot O, giving cyclic dimers (through three hydrogen bonds) which are further extended into a two-dimensional network.