Efficient Approach to Amide Bond Formation with Nitriles and Peroxides: One-Pot Access to Boronated β-Ketoamides
作者:Babasaheb Sopan Gore、Gopal Chandru Senadi、Amol Milind Garkhedkar、Jeh-Jeng Wang
DOI:10.1002/adsc.201700532
日期:2017.9.4
An efficient, mild and practical approach for the synthesis of amides from nitriles and peroxides is reported in the presence of boron trifluoride ethereate. In this protocol, we utilized peroxides as C1 synthons for the amidationreaction. Also, we successfully prepared boron‐containing β‐ketoamides in a one‐pot assembly from β‐ketonitriles. A variety of functional groups were tolerated in moderate
A new and efficient method for the synthesis of amides via palladium-catalyzed C−C coupling of arylhalides with isocyanides is reported, by which a series of amides were formed from readily available starting materials under mild conditions. This transformation could extend its use to the synthesis of natural products and significant pharmaceuticals.
General Olefin Synthesis by the Palladium‐Catalyzed Heck Reaction of Amides: Sterically Controlled Chemoselective NC Activation
作者:Guangrong Meng、Michal Szostak
DOI:10.1002/anie.201507776
日期:2015.11.23
Metal‐catalyzed reactions of amides proceeding via metal insertion into the NCO bond are severely underdeveloped due to resonance stabilization of the amide bond. Herein we report the first Heck reaction of amides proceeding via highly chemoselective NCO cleavage catalyzed by Pd0 utilizing amide bond ground‐state destabilization. Conceptually, this transformation provides access to a myriad of metal‐catalyzed
<i>N</i>-Acylsaccharins as Amide-Based Arylating Reagents via Chemoselective N–C Cleavage: Pd-Catalyzed Decarbonylative Heck Reaction
作者:Chengwei Liu、Guangrong Meng、Michal Szostak
DOI:10.1021/acs.joc.6b02294
日期:2016.12.2
decarbonylative Heckreaction of amides by chemoselective N–C activation using N-acylsaccharins as coupling partners has been accomplished. These studies represent only the second example of amide-Heck reactions reported to date. A broad range of electronically diverse amide and olefin coupling partners is amenable to this transformation. Orthogonal site-selective Heckcross-couplings by C–Br/N–C cleavage
Herein described is a nickel-catalyzed aminocarbonylation of aryl/alkenyl/allyl (pseudo)halides with isocyanides, providing aryl/alkenyl/allyl amides in 41% to 92% yields. Functional groups such as F, Cl, OMe, and heteroaromatic rings are compatible in the reaction. A Ni(0)/Ni(II) catalytic cycle is proposed based on preliminary experiments and previous literature. The reaction features readily available