Sodium Carbonate → 5-Amino-5-methylheptan-3-one

Reaction equation

C(C1(C)N=[C:7]([CH2:9][CH3:10])[CH2:6][C:5]([CH2:12][CH3:13])([CH3:11])[NH:4]1)C.N1C=CCNC1.C(=O)([O-])[O-:22].[Na+].[Na+]>Cl>[NH2:4][C:5]([CH3:11])([CH2:12][CH3:13])[CH2:6][C:7](=[O:22])[CH2:9][CH3:10]

Participants

Procedure

196.3 g of 2,4,6-triethyl-2,6-dimethyl-1,2,5,6-tetrahydropyrimidine were added dropwise to 300 ml of concentrated hydrochloric acid at 30° - 40° C, with stirring. When all of the tetrahydropyrimidine had been added, the entire mixture was stirred for 4 - 5 hours and then neutralized with sodium carbonate and extracted with benzene. The resulting benzene solution was washed, in turn, with a 5% aqueous solution of sodium carbonate and with water, and was then dried over potassium carbonate. After removing the benzene, the residue was distilled under reduced pressure, giving 72.4 g of 5-amino-5-methyl-3-heptanone (bp 46° - 48° C/2.5 mmHg).