Crystal structure of 1'-(prop-2-yn-1-yl)-1,4-di-hydro-spiro-[benzo[d][1,3]oxazine-2,3'-indolin]-2'-one.
In the title compound, C18H14N2O2, the six-membered oxazine ring adopts a half-chair conformation and its mean plane makes a dihedral angle of 83.23 (7)° with the pyrrolidine ring of the indoline ring system. In the crystal, mol-ecules are linked via N-H⋯O hydrogen bonds, forming chains along [100]. The chains are linked by C-H⋯π inter-actions, forming slabs parallel to (001).
Department of Physics, Presidency College (Autonomous), Chennai 600 005, India.
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AaminaNaaz
Organic Chemistry Division, Central Leather Research Institute, Adyar, Chennai 602 020, India.
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Kamalraja
Department of Physics, Presidency College (Autonomous), Chennai 600 005, India.
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Vimala
Organic Chemistry Division, Central Leather Research Institute, Adyar, Chennai 602 020, India.
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Perumal
Department of Physics, Presidency College (Autonomous), Chennai 600 005, India.
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SubbiahPandi
N—H⋯O hydrogen bonding; crystal structure; indoline; oxazine; spiro compounds; spiro­oxazines