Abstract
A new indoline derivative, tert-butyl 2′-amino-3′-cyano-6′-methyl-2-oxospiro[indoline-3,4′-pyran]-5′-carboxylate is eco-friendly synthesized, and its spectral properties and X-ray crystal structure are studied. In the molecule, the oxindole and pyran moieties are perpendicular to each other. The crystal structure is stabilized by intermolecular N−H···O and intramolecular C−H···O hydrogen bonds. Centrosymmetric dimer units are formed by intermolecular N−H···O hydrogen bonds. In addition, one C−H···π interaction is also observed.
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