title: Trifluoroacetic acid-promoted Michael addition-cyclization reactions of vinylogous carbamates.
abstract: A simple and efficient methodology has been developed for the synthesis of pyrrolobenzoxazine and 3-arylamino coumarin derivatives promoted by trifluoroacetic acid. The initial step in the current protocol involves a Michael addition of the 1,4-benzoxazinone derivatives, a novel class of vinylogous carbamates to the Michael acceptors and subsequent cyclization.
authors.affiliation: The Department of Chemistry, Indian Institute of Technology, Roorkee-247667, Uttarakhand, India. rkpedfcy@iitr.ac.in ramakpeddinti@gmail.com.
authors.forename: Ram Tilak
authors.initials: RT
authors.lastname: Naganaboina
authors.forename: Amrita
authors.initials: A
authors.lastname: Nayak
authors.forename: Rama Krishna
authors.initials: RK
authors.lastname: Peddinti
mesh_terms: D048588:Benzoxazines / Q000737:chemistry; D002219:Carbamates / Q000737:chemistry*; D018360:Crystallography, X-Ray; D003500:Cyclization; D009285:Naphthoquinones / Q000737:chemistry; D014269:Trifluoroacetic Acid / Q000737:chemistry*; D014753:Vinyl Compounds / Q000737:chemistry*
chemical_list: D048588:Benzoxazines; D002219:Carbamates; D009285:Naphthoquinones; D014753:Vinyl Compounds; D014269:Trifluoroacetic Acid