Dicumyl Peroxide as a Methylating Reagent in the Ni-Catalyzed Methylation of Ortho C–H Bonds in Aromatic Amides
作者:Teruhiko Kubo、Naoto Chatani
DOI:10.1021/acs.orglett.6b00658
日期:2016.4.1
The direct methylation of ortho C–H bonds in aromatic amides with dicumyl peroxide (DCP) using a nickel complex as the catalyst is reported. The reaction shows a high functional group tolerance and is inhibited by radical scavengers. In reactions of meta-substituted aromatic amides, the reaction proceeds in a highly selective manner at the less hindered C–H bonds.
Ruthenium-catalyzed ortho-C–H bond alkylation of aromatic amides with α,β-unsaturated ketones via bidentate-chelation assistance
作者:Guy Rouquet、Naoto Chatani
DOI:10.1039/c3sc50310k
日期:——
chelation assisted reaction using a removable 8-aminoquinoline bidentate directing group that permits the ruthenium-catalyzed ortho-C–H bond alkylation of aromatic amides with various α,β-unsaturated ketones under straightforward conditions has been developed. This methodology represents the first efficient utilization of enones in the ortho directed ruthenium-catalyzed addition of C–H bonds to C–C double bonds
Rhodium-Catalyzed Alkylation of C–H Bonds in Aromatic Amides with α,β-Unsaturated Esters
作者:Kaname Shibata、Naoto Chatani
DOI:10.1021/ol502500c
日期:2014.10.3
carbonyl compounds by a rhodium-catalyzed reaction of aromaticamidescontaining an 8-aminoquinoline moiety is reported. The reaction is highly regioselective. The formation of C–C bonds occurs between the ortho C–H bonds in aromaticamides and the β-position of the acyclic α,β-unsaturated carbonyl compounds. The reaction is applicable to various acyclic α,β-unsaturated carbonyl compounds, such as
Cobalt(II)-Catalyzed Acyloxylation of C–H Bonds in Aromatic Amides with Carboxylic Acids
作者:Rina Ueno、Satoko Natsui、Naoto Chatani
DOI:10.1021/acs.orglett.7b04020
日期:2018.2.16
The cobalt(II)-catalyzed acyloxylation of C–H bonds in aromatic amides containing an 8-aminoquinoline moiety as the directing group with carboxylic acids is reported. Various carboxylic acids including aromatic and aliphatic carboxylic acids are applicable to the reaction. The reaction displays a broad substrate scope and high functional group tolerance. The reaction is carried out under air.
Iron-Catalyzed Directed C(sp<sup>2</sup>)–H and C(sp<sup>3</sup>)–H Functionalization with Trimethylaluminum
作者:Rui Shang、Laurean Ilies、Eiichi Nakamura
DOI:10.1021/jacs.5b04818
日期:2015.6.24
Conversion of a C(sp(2))-H or C(sp(3))-H bond to the corresponding C-Me bond can be achieved by using AlMe3 or its air-stable diamine complex in the presence of catalytic amounts of an inorganic iron(III) salt and a diphosphine along with 2,3-dichlorobutane as a stoichiometric oxidant. The reaction is applicable to a variety of amide substrates bearing a picolinoyl or 8-aminoquinolyl directing group