Highly Regioselective Heck Coupling Reactions of Aryl Halides and Dihydropyran in the Presence of an NHC-Pyridine Ligand
作者:Kyung Jung、Jamie Jarusiewicz、Kyung Yoo
DOI:10.1055/s-0028-1087528
日期:2009.2
The Heck coupling reactions of aryl halides and 3,4-dihydro-2H-pyran facilitated the regioselective synthesis of arylated cyclic enol ethers. Good yields were obtained using 5 mol% of an NHC-ligand-Pd-catalyst complex in the presence of K2CO3 in DMF at 100 ËC. The use of this catalytic system broadens the substrate scope and improves the selectivity for this cross-coupling process.
Heck Reaction of
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‐Heteroaryl Halides for the Concise Synthesis of Chiral α‐Heteroaryl‐substituted Heterocycles
作者:Bowen Li、Bangke Luo、He Yang、Wenjun Tang
DOI:10.1002/anie.202209087
日期:2022.9.19
Heckreaction between N-heteroaryl halides and heterocyclic olefins has been accomplished by adopting either a P, P=O-based ligand or (S)-DTBM- SEGPHOS, leading to the formation of a variety of nonchiral or chiral α-heteroaryl-substituted heterocycles.