title: Highly regio- and diastereoselective construction of spirocyclopenteneoxindoles through phosphine-catalyzed [3 + 2] annulation of Morita-Baylis-Hillman carbonates with isatylidene malononitriles.
abstract: Phosphine-catalyzed highly regio- and diastereoselective [3 + 2] annulation of Morita-Baylis-Hillman (MBH) carbonates with isatylidene malononitriles has been disclosed to give the corresponding spirocyclopenteneoxindoles in excellent yields under mild conditions. A plausible reaction mechanism has also been proposed on the basis of previous literature.
authors.affiliation: State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032 China.
authors.forename: Hong-Ping
authors.initials: HP
authors.lastname: Deng
authors.forename: Yin
authors.initials: Y
authors.lastname: Wei
authors.forename: Min
authors.initials: M
authors.lastname: Shi