title: Ag(I)-Catalyzed Domino Cyclization-Addition Sequence with Simultaneous Carbonyl and Alkyne Activation as a Route to 2,2'-Disubstituted Bisindolylarylmethanes.
abstract: An efficient synthesis of symmetrical 3, 3'-bisindolylarylmethanes with various substituents on the indole moiety has been developed by Ag(I)-catalyzed cycloisomerization and an deoxygenative addition sequence on o-alkynylanilines and aryl aldehydes. Ag(I) is proposed to activate alkyne unit and carbonyl moiety simultaneously leading to a domino first 5-endo-dig indole annulation, addition to C═O, second indole annulation, and its dehydroxylative addition.
authors.affiliation: Department of Chemistry, Basirhat College , Basirhat 743412, West Bengal India.
authors.forename: Swastik
authors.initials: S
authors.lastname: Karmakar
authors.affiliation: Department of Chemistry, Basirhat College , Basirhat 743412, West Bengal India.
authors.forename: Prasanta
authors.initials: P
authors.lastname: Das
authors.affiliation: Department of Chemistry, Basirhat College , Basirhat 743412, West Bengal India.
authors.forename: Debjyoti
authors.initials: D
authors.lastname: Ray
authors.affiliation: Department of Chemistry, University of Kalyani , Kalyani 741235, West Bengal India.
authors.forename: Subhankar
authors.initials: S
authors.lastname: Ghosh
authors.affiliation: Department of Chemistry, University of Kalyani , Kalyani 741235, West Bengal India.
authors.forename: Shital K
authors.initials: SK
authors.lastname: Chattopadhyay