Naresh Sharma1, Goutam Brahmachari2, Bubun Banerjee2, Rajni Kant1, Vivek K Gupta1. 1. Post-Graduate Department of Physics & Electronics, University of Jammu, Jammu Tawi 180 006, India. 2. Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati University, Santiniketan 731 235, West Bengal, India.
Abstract
In the title compound, C17H18N4O4, the dihedral angle between the benzene ring and 2,4-di-hydro-pyrano[2,3-c]pyrazole ring system is 89.41 (7)°. The pyran moiety adopts a strongly flattened boat conformation. In the crystal, mol-ecules are linked by N-H⋯N, N-H⋯O, C-H⋯N and C-H⋯O hydrogen bonds into an infinite two-dimensional network parallel to (110). There are π-π inter-actions between the pyrazole rings in neighbouring layers [centroid-centroid distance = 3.621 (1) Å].
In the title compound, C17H18N4O4, the dihedral angle between the n class="Chemical">benzene ring and 2,4-di-hydro-pyrano[2,3-c]pyrazole ring system is 89.41 (7)°. The pyran moiety adopts a strongly flattened boat conformation. In the crystal, mol-ecules are linked by N-H⋯N, N-H⋯O, C-H⋯N and C-H⋯O hydrogen bonds into an infinite two-dimensional network parallel to (110). There are π-π inter-actions between the pyrazole rings in neighbouring layers [centroid-centroid distance = 3.621 (1) Å].
Authors: Fathy M Abdelrazek; Peter Metz; Olga Kataeva; Anne Jäger; Sherif F El-Mahrouky Journal: Arch Pharm (Weinheim) Date: 2007-10 Impact factor: 3.751