title: Rawal's catalyst as an effective stimulant for the highly asymmetric Michael addition of β-keto esters to functionally rich nitro-olefins.
abstract: A general approach to asymmetric synthesis of highly substituted dihydroquinolines was achieved through neighboring ortho-amino group engaged sequential Michael/amination/dehydration reactions on (E)-2-(2-nitrovinyl)anilines with cyclic and acyclic β-keto esters in the presence of a catalytic amount of Rawal's quinidine-NH-benzyl squaramide followed by TFA.
authors.affiliation: School of Chemistry, University of Hyderabad, Hyderabad 500 046, India. ramsc@uohyd.ernet.in.
authors.forename: A
authors.initials: A
authors.lastname: Suresh Kumar
authors.affiliation: School of Chemistry, University of Hyderabad, Hyderabad 500 046, India. ramsc@uohyd.ernet.in.
authors.forename: T
authors.initials: T
authors.lastname: Prabhakar Reddy
authors.affiliation: School of Chemistry, University of Hyderabad, Hyderabad 500 046, India. ramsc@uohyd.ernet.in.
authors.forename: R
authors.initials: R
authors.lastname: Madhavachary
authors.affiliation: School of Chemistry, University of Hyderabad, Hyderabad 500 046, India. ramsc@uohyd.ernet.in.
authors.forename: Dhevalapally B
authors.initials: DB
authors.lastname: Ramachary