title: Ruthenium(II) Catalyzed Regiospecific C-H/O-H Annulations of Directing Arenes via Weak Coordination.
abstract: Ruthenium(II) catalyzed oxidative C-H/O-H annulations have been demonstrated using two different directing arenes viz. 2-arylquinolinone and 2-arylbenzoxazinone with internal alkynes. Regiospecific annulations have been observed for both directing arenes via the assistance of weaker carbonyl oxygen in the presence of a stronger nitrogen-directing site. In this substrate-controlled convergent protocol the weaker directing group dictates the annulation path.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati 781039, India.
authors.forename: Arghya
authors.initials: A
authors.lastname: Banerjee
authors.affiliation: Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati 781039, India.
authors.forename: Sourav Kumar
authors.initials: SK
authors.lastname: Santra
authors.affiliation: Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati 781039, India.
authors.forename: Prakash Ranjan
authors.initials: PR
authors.lastname: Mohanta
authors.affiliation: Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati 781039, India.
authors.forename: Bhisma K
authors.initials: BK
authors.lastname: Patel