title: Synthesis of Benzofulvenes through Rhodium-Catalyzed Transannulation of Enynyl Triazoles.
abstract: Rhodium-catalyzed denitrogenative cyclization of (E)-ethyl 2-(1-alkyl and arylsulfonyl-1H-1,2,3-triazol-4-yl)-3-aryl acrylate generated from (E)-ethyl 2-benzylidenebut-3-ynoates and N-sulfonyl azides in the presence of a copper catalyst was developed for the synthesis of a large number of functionalized benzofulvenes. Moreover, the synthesis of benzofulvenes was demonstrated as a one-pot method through tandem copper-catalyzed [3 + 2] cycloaddition and rhodium-catalyzed denitrogenative cyclization from (E)-ethyl 2-benzylidenebut-3-ynoates and N-sulfonyl azides.
authors: National Creative Research Initiative Center for Catalytic Organic Reactions, Department of Chemistry, Kangwon National University , Chuncheon 24341, Republic of Korea.
authors: Seohyun
authors: S
authors: Shin
authors: National Creative Research Initiative Center for Catalytic Organic Reactions, Department of Chemistry, Kangwon National University , Chuncheon 24341, Republic of Korea.
authors: Jeong-Yu
authors: JY
authors: Son
authors: National Creative Research Initiative Center for Catalytic Organic Reactions, Department of Chemistry, Kangwon National University , Chuncheon 24341, Republic of Korea.
authors: Changwook
authors: C
authors: Choi
authors: National Creative Research Initiative Center for Catalytic Organic Reactions, Department of Chemistry, Kangwon National University , Chuncheon 24341, Republic of Korea.
authors: Sanghyuck
authors: S
authors: Kim
authors: National Creative Research Initiative Center for Catalytic Organic Reactions, Department of Chemistry, Kangwon National University , Chuncheon 24341, Republic of Korea.
authors: Phil Ho
authors: PH
authors: Lee