Asymmetric Organocatalytic Three-Component 1,3-Dipolar Cycloaddition: Control of Stereochemistry via a Chiral Brønsted Acid Activated Dipole
作者:Xiao-Hua Chen、Wen-Quan Zhang、Liu-Zhu Gong
DOI:10.1021/ja801034e
日期:2008.4.1
A Bronsted acid catalyzed three-component asymmetric 1,3-dipolar addition reaction between aldehydes, amino esters, and dipolarophiles by a new bisphosphoric acid, derived from the linked BINOL, furnished multiply substituted pyrrolidines in high yield with excellent enantioselectivities under mild conditions.
Biomimetic Asymmetric 1,3-Dioplar Cycloaddition: Amino Acid Precursors in Biosynthesis Serve as Latent Azomethine Ylides
作者:Chang Guo、Jin Song、Liu-Zhu Gong
DOI:10.1021/ol400983j
日期:2013.6.7
The first asymmetric catalytic biomimetic three-component 1,3-dipolar cycloaddition of α-ketoesters and benzylamine with electron-deficient olefins, inspired by the transamination of α-keto acids involving pyridoxal phosphate (PLP)-dependent enzymes in biological systems, giving several families of structurally diverse pyrrolidine derivatives in high yields and excellent enantioselectivities (up to