title: Gold-catalyzed formal cycloaddition of 2-ethynylbenzyl ethers with organic oxides and α-diazoesters.
abstract: A world of possibilities: Gold-catalyzed reactions of 2-ethynylbenzyl ethers with organic oxides and α-diazoesters gave 1,3-dihydroisobenzofuran and naphthalene derivatives, respectively (see scheme; EWG = electron-withdrawing group). Mechanisms for the formation of the formal cycloadducts were elucidated by isotope labeling.
authors.affiliation: Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan.
authors.forename: Samir Kundlik
authors.initials: SK
authors.lastname: Pawar
authors.forename: Chiou-Dong
authors.initials: CD
authors.lastname: Wang
authors.forename: Sabyasachi
authors.initials: S
authors.lastname: Bhunia
authors.forename: Appaso Mahadev
authors.initials: AM
authors.lastname: Jadhav
authors.forename: Rai-Shung
authors.initials: RS
authors.lastname: Liu
keywords: alkynes; benzyl ethers; diazo compounds; formal cycloaddition; gold catalysis