Cross-Coupling of Nonactivated Primary and Secondary Alkyl Halides with Aryl Grignard Reagents Catalyzed by Chiral Iron Pincer Complexes
作者:Xile Hu、Gerald Bauer、Chi Cheung
DOI:10.1055/s-0034-1380136
日期:——
Abstract Iron(III) bisoxazolinylphenylamido (bopa) pincer complexes are efficient precatalysts for the cross-coupling of nonactivated primary and secondary alkyl halides with phenyl Grignardreagents. The reactions proceed at room temperature in moderate to excellent yields. A variety of functional groups can be tolerated. The enantioselectivity of the coupling of secondary alkyl halides is low. Iron(III)
Ligand‐Controlled Regiodivergent Hydroalkylation of Pyrrolines
作者:Deyun Qian、Xile Hu
DOI:10.1002/anie.201912629
日期:2019.12.16
Nickel hydride (NiH) catalyzed hydrocarbonation has emerged as an efficient approach to construct new C-C bonds containing at least one C(sp3 ) center. However, the regioselectivity of this reaction is by far dictated by substrates. Described here is a strategy to achieve two different regioselectivites of hydroalkylation of the same substrates by using ligand control. This strategy enables the first
Nickel-Catalyzed <i>C</i>-Alkylation of Nitroalkanes with Unactivated Alkyl Iodides
作者:Sina Rezazadeh、Vijayarajan Devannah、Donald A. Watson
DOI:10.1021/jacs.7b04312
日期:2017.6.21
Enabled by nickel catalysis, a mild and general catalytic method for C-alkylation of nitroalkanes with unactivatedalkyliodides is described. Compatible with primary, secondary, and tertiary alkyliodides; and tolerant of a wide range of functional groups, this method allows rapid access to diverse nitroalkanes.
Mild and Phosphine-Free Iron-Catalyzed Cross-Coupling of Nonactivated Secondary Alkyl Halides with Alkynyl Grignard Reagents
作者:Chi Wai Cheung、Peng Ren、Xile Hu
DOI:10.1021/ol501087m
日期:2014.5.2
cross-coupling of nonactivated secondary alkylbromides and iodides with alkynyl Grignardreagents at room temperature has been developed. A wide range of secondary alkyl halides and terminal alkynes are tolerated to afford the substituted alkynes in good yields. A slight modification of the reaction protocol also allows for cross-coupling with a variety of primary alkyl halides.
Merging Halogen-Atom Transfer (XAT) and Copper Catalysis for the Modular Suzuki–Miyaura-Type Cross-Coupling of Alkyl Iodides and Organoborons
作者:Zhenhua Zhang、Bartosz Górski、Daniele Leonori
DOI:10.1021/jacs.1c12649
日期:2022.2.2
Suzuki–Miyaura-type cross-couplings between alkyl iodides and aryl organoborons. This process requires a copper catalyst but, in contrast with previous approaches based on palladium and nickel systems, does not utilizes the metal for the activation of the alkylelectrophile. Instead, this strategy exploits the halogen-atom-transfer ability of α-aminoalkyl radicals to convert secondary alkyl iodides into the