Methanesulfonic Acid → 2-Methyl-1-[2-methyl-2-[(2,6-dimethylphenyl)carbamoyl]ethyl]-2-imidazoline

Beteiligte Stoffe

Reaktionsschritte

Combine 30.0 gm. (0.16 M) N-(2,6-dimethylphenyl)-2-methylpropenamide [methacroyl-2',6'-xylidide], 13.3 gm. (0.16 M) lysidine, 3 gm. (0.03 M) methanesulphonic acid and 150 ml. of ethanol in a pressure bottle and heat at about 150° C. for about 48 hours. Remove the solvent in vacuo, add 200 ml. of water and adjust the pH to 7.8 with conc. HCl. Extract the aqueous phase with 4×100 ml. of methylene chloride and set these aside. Treat the aqueous phase with 20% NaOH to obtain a pH of about 13. Extract the aqueous phase with 4×100 ml. of methylene chloride. Wash the combined methylene chloride extracts with 3×10 ml. water and dry organic layer over sodium sulfate. Evaporate off the solvents to obtain the title compound.

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