N-H insertion reactions of primary ureas: The synthesis of highly substituted imidazolones and imidazoles from diazocarbonyls

Article abstract of DOI:10.1021/jo048353u

Primary ureas have been used as substrates in rhodium-catalyzed N-H insertion reactions with an array of diazocarbonyls. The insertion reaction is efficient and gives excellent selectivity and yields. The products from the insertion reaction with diazoket