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METHYL 1-METHYL-2-IMIDAZOLINE-4-CARBOXYLATE synthesis

1synthesis methods
-

Yield:-

Reaction Conditions:

in water;

Steps:

38 Dimethyl 5-methyl-2-(1-methyl-4-imidazolyl)pyrrole-3,4-dicarboxylate (38)

17.0 g of 38C was dissolved in 203 ml of anhydrous methanol and dry hydrogen chloride was bubbled rapidly into the mixture while it was heated to and at reflux for 2 hours. the mixture was cooled, stripped of volatiles, mixed with 300 ml of water, neutralized with solid sodium bicarbonate, made basic to pH=9 with 3N aqueous sodium carbonate solution. The aqueous phase was extracted with methylene chloride, the extract was dried (MgSO4), filtered and stripped of solvent, to give methyl 1-methylimidazoline-4-carboxylate (38D), as a brown oil.

References:

US4853027,1989,A