4-Methylmorpholine → HCID 22466693, compound

Participants

Reaction Conditions

Reaction Steps

Partially dissolved 1.21 (7.22 mmol) 4-piperidino-2-butynoic acid in 100 ml THF and chilled to 0° C. under N2. Added 955 μl (8.67 mmol) N-methylmorpholine and 750 μl (5.78 mmol) isobutyl chloroformate. Stirred for 40 minutes and added a solution of 840 mg (2.89 mmol) 6-amino-4-[(3-methoxyphenyl)amino]-3-quinolinecarbonitrile dissolved in 10 ml hot pyridine. At 2 hours, poured into ice water and made basic with saturated sodium bicarbonate. Extracted with ethyl acetate, dried with sodium sulfate, and stripped down to a small volume, which was loaded onto a column of silica gel. Eluted with 10% methanol/ethyl acetate, stripped solvent of desired fractions, and dried in vacuo, giving 970 mg of green solid: mass spectrum (electrospray m/e): M+H=440.1.

Provenance & Evidence