3-Methoxyphenyl isocyanate → HCID 3039362, compound

Participants

Reaction Steps

Conversion of the hydrochloride salt of 2-imino-1-methylpyrrolidine (6.73 g.; 0.05 mole) to the free base (4.9 g. assuming 100% conversion) is carried out in the usual manner. After drying over K2CO3, the benzene layer is stirred at room temperature and 7.45 g. (0.05 mole) of m-methoxyphenylisocyanate is added. The reaction mixture is stirred overnight and then taken to dryness in vacuo to give a white solid residue of 1-m-methoxyphenyl-3-(1-methyl-2-pyrrolidylidene)urea, m.p. = 123°-125° C. Recrystallizations from acetone affords the pure product, m.p. = 128°-129.5° C.

Provenance & Evidence