title: Silicon powder: the first nonmetal elemental catalyst for aminobromination of olefins with TsNH(2) and NBS.
abstract: Silicon powder was found, for the first time, to be an efficient alternative to transition metal catalysts for aminobromination of alpha,beta-unsaturated carbonyl compounds and simple olefins with p-toluenesulfonamide (4-TsNH(2)) and NBS, affording the aminobrominated products in high yields and regio- and stereoselectivity. The high reactivity of electron-rich substrates reveals that the reaction has the electrophilic addition feature.
authors.affiliation: School of Chemistry and Materials Science, Shaanxi Normal University, Shaanxi Xi'an 710062, PR China. weijf@snnu.edu.cn
authors.forename: Jun-Fa
authors.initials: JF
authors.lastname: Wei
authors.forename: Zhan-Guo
authors.initials: ZG
authors.lastname: Chen
authors.forename: Wei
authors.initials: W
authors.lastname: Lei
authors.forename: Li-Hui
authors.initials: LH
authors.lastname: Zhang
authors.forename: Ming-Zheng
authors.initials: MZ
authors.lastname: Wang
authors.forename: Xian-Ying
authors.initials: XY
authors.lastname: Shi
authors.forename: Run-Tao
authors.initials: RT
authors.lastname: Li
mesh_terms: D000475:Alkenes / Q000737:chemistry*; D001966:Bromine / Q000737:chemistry*; D002384:Catalysis; D020650:Combinatorial Chemistry Techniques; D011208:Powders / Q000737:chemistry; D012825:Silicon / Q000737:chemistry*; D013237:Stereoisomerism; D013449:Sulfonamides / Q000737:chemistry*
chemical_list: D000475:Alkenes; D011208:Powders; D013449:Sulfonamides; D001966:Bromine; D012825:Silicon