Intermolecular Enantioselective Heck–Matsuda Arylations of Acyclic Olefins: Application to the Synthesis of β-Aryl-γ-lactones and β-Aryl Aldehydes
作者:Caio C. Oliveira、Ricardo A. Angnes、Carlos Roque D. Correia
DOI:10.1021/jo400378g
日期:2013.5.3
intermolecular Heck–Matsuda arylation of acyclic allylicalcohols. Aryldiazonium tetrafluoroborates were applied as arylating agents in the presence of Pd(TFA)2 and a chiral, commercially available, bisoxazoline ligand. The methodology is straightforward, robust, scalable up to a few grams, and of broad scope allowing the synthesis of a range of β-aryl-carbonyl compounds in good to high enantioselectivities
tetrafluoroborates with the THP derivative of (Z)-2-butene-1,4-diol in the presence of Pd(OAc) 2 in MeOH at 35 °C gives 4-aryl-2-methoxytetrahydrofurans in good to high yields. The reaction tolerates a variety of useful functional groups including ester, keto, cyano, nitro, chloro, and bromo functionalities as well as ortho substituents. Based on this process, y-aryl-β-butyrolactone derivatives can be prepared via
In Tandem Auto‐Sustainable Enantioselective Heck‐Matsuda Reactions Directly from Anilines
作者:Christian Leonardo Herrera、João Victor Santiago、Julio Cezar Pastre、Carlos Roque Duarte Correia
DOI:10.1002/adsc.202200205
日期:2022.6.7
An in tandem enantioselective Heck-Matsuda (HM) reaction of cyclic and acyclic olefins directly from anilines is described. The method relies on a process involving the progressive in situ diazotization of the starting anilines followed by a palladium-catalyzed Heck-Matsuda arylation using chiral N,N-ligands. This intermolecular enantioselective HM arylation strategy was applied to the desymmetrization