title: Liquid-phase parallel synthesis of ureas.
abstract: An efficient and general liquid-phase method has been developed for the synthesis of a piperazine containing urea library. Reactions of the polymer bound carbamoyl chloride with primary or secondary amines afford ureas at ambient temperature. Desired compounds are liberated from the polymer support under mild conditions in high yields and high purity by simple precipitation and washings.
authors.affiliation: Department of Chemistry, National Dong Hwa University, Hualien, Taiwan.
authors.forename: K T
authors.initials: KT
authors.lastname: Huang
authors.forename: C M
authors.initials: CM
authors.lastname: Sun
mesh_terms: D002851:Chromatography, High Pressure Liquid; D020650:Combinatorial Chemistry Techniques / Q000379:methods*; D010879:Piperazines / Q000737:chemistry; D011092:Polyethylene Glycols / Q000737:chemistry; D012996:Solutions; D014508:Urea / Q000031:analogs & derivatives* / Q000138:chemical synthesis*
chemical_list: D010879:Piperazines; D012996:Solutions; D011092:Polyethylene Glycols; D014508:Urea