A convenient, one-step synthesis of benzyl (Ar) ureas of the type ArCH(2)NHCONHR from Ar and R(1)OCH(2)NHCONHR via ureidoalkylation.
A method for the one-step C-ureidoalkylation of phenol, anisole, or aniline rings furnishing ArCH(2)NHCONHR (Ar = benzyl) products in moderate to good yields is described. With phenol ring systems, higher yields were attained when the reaction was worked up with an acidic ethanethiol addition to cleave any O-ureidoalkylation products that formed during the reaction.
Meece
F Alex
FA
Department of Chemistry, Wichita State University, Wichita, Kansas 67260,
Jayasinghe
Champika
C
Histand
Gary
G
Burns
Dennis H
DH