2,4-Dioxo-1-(prop-2-ynyl)-1,2,3,4-tetrahydropyrimidine-5-carbaldehyde

2,4-Dioxo-1-(prop-2-ynyl)-1,2,3,4-tetrahydropyrimidine-5-carbaldehyde

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In the crystal structure of the title compound, C8H6N2O3, the molecules are linked by a pairs of intermolecular N—H.O hydrogen bonds, forming inversion dimers.The aldehyde group is in the Vases same plane as the pyrimidine ring [with a Sofa maximum deviation of 0.083 (2) Å for the O atom), and the linear propargyl group [C—C—C = 178.

99 (19)°] makes a dihedral angle of 74.36 (13)° with the ring.