Diisopropylethylamine → HCID 67345592, compound

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Reaction Steps

A mixture of 1-benzenesulfonyl-4-chloro-5-nitro-1H-pyrrolo[2,3-b]pyridine (2 g, 5.9 mmol), (R)-1-Benzyl-pyrrolidin-3-ylamine (2.4 g, 15.3 mmol), and diisopropylethylamine (6 mL, 35.4 mmol) in propan-2-ol (50 mL) was heated to reflux for 4 hours. Volatile components were removed under vacuum and the residue was purified by column chromatography on silica gel (gradient: 0 to 5% methanol in dichloromethane), gave 2.48 g (88%) of (R)—N-(1-benzylpyrrolidin-3-yl)-5-nitro-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridin-4-amine. LCMS (Method J, ESI): RT=0.98 min, M+H+=478.1; 1H NMR (400 MHz, CDCl3) δ: 9.29-9.27 (s, 1H), 9.10 (s, 1H), 8.20-8.17 (m, 2H), 7.63-7.57 (m, 2H), 7.53-7.49 (m, 2H), 7.36-7.25 (m, 6H), 6.77-6.76 (d, J=4.4, 1H), 4.55-4.54 (m, 1H), 3.73-3.63 (m, 1H), 2.94-2.91 (m, 1H), 2.78-2.77 (m, 2H), 2.49-2.41 (m, 4H), 1.90-1.88 (m, 1H).

Provenance & Evidence