Dimethylformamide → HCID 13730862, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of 4-isopropyl-4-methyl-2-(2-quinolyl)-2-imidazolin-5-one (3 g, 0.0112 mol) in ether (150 ml) is added tetramethylethylenediamine (3.4 g, 0.00225 mol). n-Butyllithium (17 ml, 0.027 mol) in hexane is added dropwise to the reaction mixture cooled to -63° C. An intense red color is generated and after the addition the mixture was maintained at -10° to -20° C. for 21/2 hours. Dry DMF (5 ml) was added at -10° C. and the mixture is allowed to attain room temperature, while stirring overnight. The mixture is diluted with water (75 ml) and is neutralized with acetic acid. A pale yellow solid 2.57 g (78%) is obtained with mp 226°-227° C. after crystallization* from 95% ethanol. Anal. calcd. for C17H17N3O2 : C, 69.13; H, 5.80; N, 14.23. Found: C, 68.98; H, 5.88; N, 14.25. The oxime of this aldehyde, prepared in the usual way, has mp 255°-257° C.

Provenance & Evidence