Reaction of 2,3-diaminonaphthalene with pyruvic acid

Abstract

The condensation product of 1,3-diaminonaphthalene with pyruvic acid was prepared, isolated in its crystalline form, and submitted to X-ray and FT-IR analyses. Results indicate that the amide form of the derivative is predominant in the crystalline state and that nearly planar molecules form dimers through hydrogen bonding across a center of symmetry; mw = 210.24, monoclinic, C2/c, a = 19.834(8), b = 4,636(6), c = 22.360(2) Å, β = 96.30(9)°, V = 2043.6 Å3, Z = 8, d0 = 1.358, dc = 1.366 g cm−3[Formula: see text] = 1.54178 Å, [Formula: see text] = 6.75 mm−1, F (000) = 880, T = 298 K, R = 0.050 for 781 observed reflections.