title: Catalytic Arylsulfonyl Radical Triggered 1,7-Enyne Bicyclizations.
abstract: A new metal-free bicyclization reaction of 1,7-enynes anchored by α,β-conjugates with arylsulfonyl radicals generated in situ from sulfonyl hydrazides has been established using tert-butyl hydroperoxide and tetrabutylammonium iodide. The reactions occurred through sulfonylation/6-exo-dig/6-exo-trig bicyclization/in situ desulfonylation/5-exo-trig cyclization/alkyl or alkenyl migration cascade mechanism to give benzo[j]phenanthridines regioselectively.
authors.affiliation: Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing 210009, Jiangsu P. R. China.|School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University , Xuzhou, 221116, Jiangsu P. R. China.
authors.forename: Yi-Long
authors.initials: YL
authors.lastname: Zhu
authors.affiliation: School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University , Xuzhou, 221116, Jiangsu P. R. China.|Department of Chemistry and Biochemistry, Texas Tech University , Lubbock, Texas 79409-1061, United States.
authors.forename: Bo
authors.initials: B
authors.lastname: Jiang
authors.affiliation: School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University , Xuzhou, 221116, Jiangsu P. R. China.
authors.forename: Wen-Juan
authors.initials: WJ
authors.lastname: Hao
authors.affiliation: Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing 210009, Jiangsu P. R. China.|School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University , Xuzhou, 221116, Jiangsu P. R. China.
authors.forename: Jiang-Kai
authors.initials: JK
authors.lastname: Qiu
authors.affiliation: Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing 210009, Jiangsu P. R. China.|School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University , Xuzhou, 221116, Jiangsu P. R. China.
authors.forename: Jun
authors.initials: J
authors.lastname: Sun
authors.affiliation: Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing 210009, Jiangsu P. R. China.
authors.forename: De-Cai
authors.initials: DC
authors.lastname: Wang
authors.affiliation: Biotechnology and Pharmaceutical Engineering, Nanjing Tech University , Nanjing 210009, Jiangsu P. R. China.
authors.forename: Ping
authors.initials: P
authors.lastname: Wei
authors.affiliation: School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University , Xuzhou, 221116, Jiangsu P. R. China.
authors.forename: Ai-Fang
authors.initials: AF
authors.lastname: Wang
authors.affiliation: Department of Chemistry and Biochemistry, Texas Tech University , Lubbock, Texas 79409-1061, United States.|Institute of Chemistry & BioMedical Sciences, Nanjing University , Nanjing 210093, P. R. China.
authors.forename: Guigen
authors.initials: G
authors.lastname: Li
authors.affiliation: School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University , Xuzhou, 221116, Jiangsu P. R. China.
authors.forename: Shu-Jiang
authors.initials: SJ
authors.lastname: Tu
mesh_terms: D053119:Benzophenanthridines / Q000138:chemical synthesis* / Q000737:chemistry; D002384:Catalysis; D003500:Cyclization; D015394:Molecular Structure; D013237:Stereoisomerism; D020122:tert-Butylhydroperoxide / Q000737:chemistry
chemical_list: D053119:Benzophenanthridines; D020122:tert-Butylhydroperoxide