title: Palladium-Catalyzed Synthesis of 2-Aryl-2H-Benzotriazoles from Azoarenes and TMSN3.
abstract: Substrate-directed ortho C-H amination of azoarenes using TMSN3 as the source of nitrogen leading to the synthesis of 2-aryl-2H-benzotriazoles has been accomplished with the help of Pd/TBHP combinations. An intermolecular o-azidation (C-N bond formation) followed by an intramolecular N-N bond formation via nucleophilic attack of one of the azo nitrogen onto the o-azide nitrogen leads to cyclization with the expulsion of N2.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati 781 039, India.
authors.forename: Nilufa
authors.initials: N
authors.lastname: Khatun
authors.affiliation: Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati 781 039, India.
authors.forename: Anju
authors.initials: A
authors.lastname: Modi
authors.affiliation: Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati 781 039, India.
authors.forename: Wajid
authors.initials: W
authors.lastname: Ali
authors.affiliation: Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati 781 039, India.
authors.forename: Bhisma K
authors.initials: BK
authors.lastname: Patel