Justo Cobo

TL;DR: In the title compound, C(8)H(12)N(+), there is a short and almost linear but asymmetric O-H...O hydrogen bond in the anion.

TL;DR: In this paper, a two-step acylation/cyclization sequence from key intermediates 6-amino-5-(amino)methylpyrimidines, which were prepared from the precursor 6-aminopyrimidin-5-carbaldehydes, was described.

TL;DR: The molecular conformation of the title compound, dimethyl (Z)-1-[5-dimethylamino-2-methoxy-3-methyl-4(3H)-oxo-6-pyrimidinylamino]-ethylene-1,2-dicarboxylate, C14H20N4O6, in the solid state is determined by an intramolecular bifurcated hydrogen-bond system involving the H atom on the amino N6 atom and adjacent dimethylaminos N5 and carbonyl

TL;DR: The molecules of ethyl 4-(5-amino-3-methyl-1H-pyrazol-1-yl)benzoate, C13H15N3O2, are linked by two independent N-H...O hydrogen bonds into a chain of edge-fused and alternating R(4)2(8) and R(2) 2(20) rings.

TL;DR: A series of 6-(2-hydroxybenzoyl)-5-methyl-7-phenyl pyrazolo[1,5- a ]pyrimidines 5 have been synthesized directly by the solvent-free reaction between 5-amino-1 H -pyrazoles 1 and 3-benzoysl 2-methyl 4 H -chromen-4-one 4.