Triethylamine → HCID 58551224, compound

Participants

Reaction Steps

1-Methylspiro[chromeno[4,3-c]pyrazole-4,4′-piperidine] (250 mg, 0.76 mmol), 3-formyl-4-isopropoxy-benzoic acid (160 mg, 0.76 mmol), EDCI (160 mg, 0.84 mmol), and Et3N (430 μL, 3.1 mmol) were combined in dichloromethane (7.1 mL) and the reaction mixture was stirred at room temperature for 48 hours. The reaction mixture was washed with a 1 M HCl (×2), a saturated aqueous solution of NaHCO3 (×2) and a saturated aqueous solution of NaCl. The organic layer was dried over Na2SO4, filtered and the solvent was evaporated under reduced pressure. The crude product was purified by column chromatography on silica gel (0-30% ethyl acetate in dichloromethane) to yield 2-isopropoxy-5-(1-methylspiro[chromeno[4,3-c]pyrazole-4,4′-piperidine]-1′-carbonyl)benzaldehyde (117 mg, 34%) as a light yellow solid. ESI-MS m/z calc. 445.2, found 446.3 (M+1)+; Retention time: 1.74 minutes (3 min run).

Provenance & Evidence