Research Article: 2-Amino-7,7-dimethyl-5-oxo-4-(p-tol­yl)-5,6,7,8-tetra­hydro-4H-chromene-3-carbonitrile

Date Published: August 01, 2012

Publisher: International Union of Crystallography

Author(s): Sumati Anthal, Goutam Brahmachari, Sujay Laskar, Bubun Banerjee, Rajni Kant, Vivek K. Gupta.


In the title mol­ecule, C19H20N2O2, the cyclo­hexene ring adopts a sofa conformation, while the pyran ring adopts a flattened boat conformation. In the crystal, mol­ecules are linked by N—H⋯N and N—H⋯O hydrogen bonds, forming a two-dimensional network parallel to (010).

Partial Text

For background to compounds containing the 4H-pyran unit, see: Brahmachari (2010 ▶); Hatakeyama et al. (1988 ▶). For the biological activity of compounds containing a tetra­hydro­benzo[b]pyran ring system, see: Andreani & Lapi (1960 ▶); Bonsignore et al. (1993 ▶); Brahmachari (2011 ▶); Konkoy et al. (2001 ▶). For 2-amino-4H-pyrans as photoactive materials, see: Armetso et al. (1989 ▶). For the synthesis of related compounds, see: Jin et al. (2004 ▶); Balalaie et al. (2007 ▶). For related structures, see: Tu et al. (2001 ▶); Wang (2011 ▶). For ring conformations, see: Duax et al. (1975 ▶).




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