title: Cp*CoIII-Catalyzed syn-Selective C-H Hydroarylation of Alkynes Using Benzamides: An Approach Toward Highly Conjugated Organic Frameworks.
abstract: Hydroarylation of internal alkynes by cost-effective CoIII-catalysis, directed by N-tert-butyl amides, is achieved to avail mono- or dihydroarylated amide products selectively in an atom and step economic way. Several important functional groups were tolerated under the reaction conditions, and syn-hydroarylation products were exclusively isolated. Notably, a 4-fold C-H hydroarylation provided a highly conjugated organic framework in one step. Kinetic study with extensive deuterium labeling experiments were performed to support the proposed mechanism.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur 721302, W. B., India.
authors.forename: Sourav Sekhar
authors.initials: SS
authors.lastname: Bera
authors.affiliation: Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur 721302, W. B., India.
authors.forename: Suvankar
authors.initials: S
authors.lastname: Debbarma
authors.affiliation: Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur 721302, W. B., India.
authors.forename: Avick Kumar
authors.initials: AK
authors.lastname: Ghosh
authors.affiliation: Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur 721302, W. B., India.
authors.forename: Santanu
authors.initials: S
authors.lastname: Chand
authors.affiliation: Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur 721302, W. B., India.
authors.forename: Modhu Sudan
authors.identifier: 0000-0001-9647-2683
authors.initials: MS
authors.lastname: Maji