title: Access to the Phosphorylindenopyrazole Scaffold via a Metal-Free Domino Reaction of Diazoalkylphosphonates with 3-Bromophthalides.
abstract: A novel strategy is reported here for the synthesis of an indenopyrazole scaffold bearing a phosphonate group. The entire sequence includes nucleophilic addition-elimination, Seyferth-Gilbert homologation, transphosphorylation, and a 1,3-dipolar cycloaddition reaction of diazoalkylphosphonates in a perfect "domino" manner.
authors: Academy of Scientific and Innovative Research , New Delhi 110001, India.
authors: Atul Kumar
authors: AK
authors: Chaturvedi
authors: Ruchir
authors: R
authors: Kant
authors: Academy of Scientific and Innovative Research , New Delhi 110001, India.
authors: Namrata
authors: N
authors: Rastogi