Methyl chloroformate → HCID 13730776, compound

Participants

Reaction Steps

To a solution of quinaldic acid (20 g, 0.116 mol) in tetrahydrofuran (500 ml) cooled to -9° C. is added methyl chloroformate (8.92 ml, 0.116 mol) followed by triethylamine (18.4 ml, 0.139 mol). After 20 minutes α-isopropyl-α-methyl-3-pyrroline-1-acetamide (15.1 g, 0.116 mol) is added and the mixture stirred overnight at room temperature. Water is added and the solution is reduced to 200 ml on a rotorvap. A white solid separates and is filtered off, water washed and dried. Recrystallization from absolute ethanol gives the product mp 179°-180° C., 26.86 g (87%). Anal. calcd. for C16H19N3O2 : C, 67.34; H, 6.73; N, 14.72. Found: C, 67.14; H, 6.17; N, 14.72.

Provenance & Evidence