title: Synthesis of bis-ureas from bis(o-nitrophenyl) carbonate.
abstract: A general method for the preparation of bis-ureas from bis(o-nitrophenyl) carbonate has been developed. Directional urea synthesis is achieved by sequential amine addition to bis(o-nitrophenyl) carbonate in two steps: in the first step bis(o-nitrophenyl) carbonate is reacted with benzylamine to form benzyl-o-nitrophenyl carbamate; in the second step the carbamate is reacted with a variety of diamines in toluene to yield bis-ureas.
authors.affiliation: POLITEHNICA University of Timisoara, Department of Applied Chemistry and Engineering of Organic and Natural Compounds, 300006 Timisoara, Piata Victoriei 2, Romania. cristina_turoczi@yahoo.com
authors.forename: Maria-Cristina
authors.initials: MC
authors.lastname: Turoczi
authors.forename: Monika
authors.initials: M
authors.lastname: Simon
authors.forename: Valentin
authors.initials: V
authors.lastname: Badea
authors.forename: Carol
authors.initials: C
authors.lastname: Csunderlik
mesh_terms: D003959:Diamines / Q000737:chemistry; D009596:Nitrophenols / Q000737:chemistry*; D014508:Urea / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D003959:Diamines; D009596:Nitrophenols; C006777:bis(4-nitrophenyl)carbonate; D014508:Urea