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Palladium-Catalyzed Enantioselective Synthesis of P(V)-Stereogenic Compounds via Desymmetric Annulation of Prochiral Phosphinamides and Aryl Iodides.
Org Lett
January 2025
College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China.
The enantioselective synthesis of P(V)-stereogenic compounds has emerged as an interesting research topic primarily due to their significant biological activity and broad application prospects. Herein, we disclose a method for the construction of P(V)-stereogenic compounds from prochiral phosphinamides and aryl iodides via palladium- and chiral norbornene-catalyzed desymmetric annulation. The P(V)-stereogenic compounds were formed with a broad scope with excellent enantiomeric excesses.
View Article and Find Full Text PDFCatalytic asymmetric C-N cross-coupling towards boron-stereogenic 3-amino-BODIPYs.
Nat Commun
January 2025
Shenzhen Grubbs Institute and Department of Chemistry, Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, China.
3-Amino boron dipyrromethenes (BODIPYs) are a versatile class of fluorophores widely utilized in live cell imaging, photodynamic therapy, and fluorescent materials science. Despite the growing demand for optically active BODIPYs, the synthesis of chiral 3-amino-BODIPYs, particularly the catalytic asymmetric version, remains a challenge. Herein, we report the synthesis of boron-stereogenic 3-amino-BODIPYs via a palladium-catalyzed desymmetric C-N cross-coupling of prochiral 3,5-dihalogen-BODIPYs.
View Article and Find Full Text PDFPalladium-Catalyzed Enantioselective Cyclization of 1,6-Enynes to Access Chiral γ-Butyrolactam.
J Org Chem
January 2025
Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China.
A palladium-catalyzed asymmetric chlorocyclization of 1,6-enynes has been described. Controlling the chloride ion concentration in the system by substrate design is the key to achieving asymmetric chlorinated cyclization. In the presence of Pd(PhCN)Cl and chiral phosphoramidite ligands, the reaction accesses diverse chiral ()-α-chloromethylene-γ-butyrolactams with excellent selectivity and enantioselectivity.
View Article and Find Full Text PDFEnantioselective Synthesis of Isoindolinone by Sequential Palladium-Catalyzed Aza-Heck/Suzuki Coupling Reaction.
Org Lett
January 2025
School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
We present a tandem aza-Heck/Suzuki cross-coupling reaction of -phenyl hydroxamic ethers with readily available arylboronic and alkenyl boronic acids. This protocol is enabled by a palladium catalyst paired with chiral phosphoramidite ligands, particularly under mild reaction conditions, yielding efficient and succinct synthetic routes to chiral isoindolinones with high enantioselectivity. Furthermore, this reaction exhibits excellent functional group compatibility and a rich diversity of subsequent transformations.
View Article and Find Full Text PDFSynthesis of Optically Active Spirocycles by a Sequence of Decarboxylative Asymmetric Allylic Alkylation and Heck Reaction.
Org Lett
December 2024
Institut für Chemie, Universität Oldenburg, D-26129 Oldenburg, Germany.
Optically active spirocycles were prepared in a sequence of two palladium-catalyzed reactions. In the first step, racemic α-(-iodophenyl)-β-oxo allyl esters were submitted to the palladium-catalyzed decarboxylative asymmetric allylic alkylation reaction, furnishing the α-allylated products with a quaternary stereocenter with good yields and enantioselectivities. Subsequently, these intermediate products were converted in a Heck reaction yielding the spirocyclic structures as a mixture of - and -cyclic regioisomers.
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