Manganese-Mediated Reductive Transamidation of Tertiary Amides with Nitroarenes
作者:Chi Wai Cheung、Jun-An Ma、Xile Hu
DOI:10.1021/jacs.8b03739
日期:2018.6.6
an important class of organic compounds, which have widespread industrial applications. Transamidation of amides is a convenient method to generate new amides from existing ones. Tertiary amides, however, are challenging substrates for transamidation. Here we describe an unconventional approach to the transamidation of tertiary amides using nitroarenes as the nitrogen source under reductive conditions
Cross-Coupling of Primary Amides to Aryl and Heteroaryl Partners Using (DiMeIHept<sup>Cl</sup>)Pd Promoted by Trialkylboranes or B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>
作者:Sepideh Sharif、Jonathan Day、Howard N. Hunter、Yu Lu、David Mitchell、Michael J. Rodriguez、Michael G. Organ
DOI:10.1021/jacs.7b09488
日期:2017.12.27
the coupling of amide nucleophiles to a wide variety of oxidativeadditionpartners using Pd-NHC catalysts. Through a combination of NMR spectroscopy and control studies with and without oxygen and radical scavengers, we propose that boron-imidates form under the basic reaction conditions that aid coordination of nitrogen to Pd(II), which is rate limiting, and directly delivers the intermediate for reductive
Rapidly Activating Pd-Precatalyst for Suzuki–Miyaura and Buchwald–Hartwig Couplings of Aryl Esters
作者:Amira H. Dardir、Patrick R. Melvin、Ryan. M. Davis、Nilay Hazari、Megan Mohadjer Beromi
DOI:10.1021/acs.joc.7b02588
日期:2018.1.5
for the effective cross-coupling of ester substrates. Utilizing a recently discovered precatalyst, Pd-catalyzed Suzuki–Miyaura and Buchwald–Hartwig reactions involving cleavage of the C(acyl)–Obond of aryl esters that proceed under mild conditions are reported. The Pd(II) precatalyst is highly active because it is reduced to the Pd(0) active species more rapidly than previous precatalysts.
[EN] SPIRO-QUINAZOLINONE DERIVATIVES USEFUL FOR THE TREATMENT OF NEUROLOGICAL DISEASES AND CONDITIONS<br/>[FR] DÉRIVÉS SPIRO-QUINAZOLINONE UTILES POUR LE TRAITEMENT DE TROUBLES ET DE MALADIES NEUROLOGIQUES
申请人:MERCK PATENT GMBH
公开号:WO2014117920A1
公开(公告)日:2014-08-07
The present invention relates to novel spiro-quinazolinone derivatives as positive allosteric modulators for modulating metabotropic glutamate receptor subtype 4 (mGluR4) and/or altering glutamate level or glutamatergic signalling
Nickel/Briphos-Catalyzed Direct Transamidation of Unactivated Secondary Amides Using Trimethylsilyl Chloride
作者:Subeen Yu、Taeil Shin、Maosheng Zhang、Yuanzhi Xia、Hyunwoo Kim、Sunwoo Lee
DOI:10.1021/acs.orglett.8b03304
日期:2018.12.7
Direct transamidation of secondaryamides was developed via nickel catalysis. In the presence of trimethylsilyl chloride and manganese, Ni(diglyme)Cl2 with a Briphos ligand efficiently promoted the transamidation of N-aryl benzamide derivatives with primary amines to afford the corresponding secondaryamides in moderate to good yields. Primary amines bearing electron-donating groups gave higher yields