title: Chiral GAP catalysts of phosphonylated imidazolidinones and their applications in asymmetric Diels-Alder and Friedel-Crafts reactions.
abstract: The design and synthesis of recyclable imidazolidinone catalysts using GAP chemistry/technique was described. Their applications in asymmetric Diels-Alder and Friedel-Crafts reactions with α,β-unsaturated aldehydes resulted in excellent yields and higher enantioselectivities than previous processes. As recyclable small molecular catalysts, phosphonylated imidazolidinones can be recovered and reused for up to three runs without costing significant decrease in catalytic activity.
authors.affiliation: Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA. guigen.li@ttu.edu.
authors.forename: Shuo
authors.initials: S
authors.lastname: Qiao
authors.forename: Junming
authors.initials: J
authors.lastname: Mo
authors.forename: Cody B
authors.initials: CB
authors.lastname: Wilcox
authors.forename: Bo
authors.initials: B
authors.lastname: Jiang
authors.forename: Guigen
authors.initials: G
authors.lastname: Li