4-Bromophenyl isocyanate → HCID 54390676, compound

Participants

Reaction Steps

To 4.9 grams (0.05 mole) of 2 -imino-1 -methylpyrrolidine in anhydrous benzene is added, dropwise with stirring, 9.9 g. (0.05 mole) of p-bromophenylisocyanate, dissolved in anhydrous benzene. Solid material forms as the reaction mixture is stirred at room temperature overnight. This solid, 1 -p-bromophenyl-3 -(1 -methyl-2 -pyrrolidylidene)urea, is collected, (m.p. = 135°-137° C). A second crop (m.p. = 134°-136° C) is also obtained from the mother liquor. The two crops are combined and recrystallized from isopropanol-ether to give pure 1 -p-bromophenyl-3 -(1 -methyl-2 -pyrrolidylidene)urea, m.p. = 136°-138° C.

Provenance & Evidence