Compound 2f

Methyl 2-(1-acetyl-6-chloro-2-oxoindolin-3-ylidene)acetate

From: Construction of bispirooxindoles containing three quaternary stereocentres in a cascade using a single multifunctional organocatalyst

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InChIKey SKFCMBYANVCEPK-UXBLZVDNSA-N

Synthetic procedure: See article for the definitive version of this procedure and for full experimental details.

Compound 2f was synthesized by the general method outlined for compound 2a, changing the isatin. 1H-NMR (500MHz, CDCl3): δ 8.64 (d, J = 8.5 Hz, 1H), 8.32 (s, 1H), 7.20-7.18 (m, 1H), 6.88 (s, 1H), 2.70 (s, 3H). 13C-NMR (125 MHz, CDCl3): δ 170.05, 167.45, 165.43, 142.72, 138.91, 135.56, 129.11, 125.51, 123.09, 118.71, 116.96, 52.41, 26.68.HRMS (ESI) calcd for [M+H] C13H11ClNO4, m/z: 280.0371, observed: 280.0378.

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