title: N-heterocyclic carbene catalyzed annulation of enals to aurone analogs: synthesis of cyclopentene-fused spirobenzofuran-3-ones.
abstract: A nucleophilic heterocyclic carbene mediated homoenolate annulation of enals to aurone analogs leading to the efficient synthesis of cyclopentene-fused spirobenzofuran-3-ones is reported.
authors.affiliation: Chemical Science and Technology Division, National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) , Trivandrum-695 019, India.
authors.forename: K C
authors.initials: KC
authors.lastname: Seetha Lakshmi
authors.forename: Jagadeesh
authors.initials: J
authors.lastname: Krishnan
authors.forename: C R
authors.initials: CR
authors.lastname: Sinu
authors.forename: Sunil
authors.initials: S
authors.lastname: Varughese
authors.forename: Vijay
authors.initials: V
authors.lastname: Nair