27559-45-1Relevant articles and documents
Metal-Free Sustainable Synthesis of Amides via Oxidative Amidation Using Graphene Oxide as Carbocatalyst in Aqueous Medium
Dandia, Anshu,Parihar, Sonam,Saini, Pratibha,Rathore, Kuldeep S.,Parewa, Vijay
, p. 3169 - 3175 (2019/07/30)
Abstract: We describe an efficient, clean and metal-free procedure for the synthesis of amides via oxidative amidation of aldehydes with anilines using graphene oxide (GO) as a recyclable catalyst and KBrO3 as a mild oxidant in aqueous medium under microwave irradiation. GO nanosheets were prepared and characterized by XRD, TEM, SEM, and FT-IR, analyses. GO showed high compatibility with KBrO3 in water and offered high TOF value (1.30 × 10?3 mol?g?1 min?1). GO oxygen functionalities catalyze the oxidative amidation effectively in mild condition with high recyclability. A plausible mechanism was proposed by the isolating the intermediate. Graphic Abstract: [Figure not available: see fulltext. ]
Cobalt(III)-Catalyzed Construction of Benzofurans, Benzofuranones and One-Pot Orthogonal C?H Functionalizations to Access Polysubstituted Benzofurans
Bera, Sourav Sekhar,Debbarma, Suvankar,Jana, Sripati,Maji, Modhu Sudan
, p. 2204 - 2210 (2018/06/07)
Benzofuran and benzofuranone derivatives have been synthesized through exclusive 5-exo-dig intramolecular hydroarylation using the amide-directed, cost-effective, high-valent Cp*CoIII-catalytic system. Challenging one-pot, orthogonal C?H functionalizations using two different electrophiles are also reported to afford polysubstituted benzofurans. Several valuable functional group interconversions along with removal of the amide directing group provide a route to access several diversely functionalized benzofurans. The mechanistic study suggests a reversible cobaltation step is operative here. (Figure presented.).
Copper-catalyzed regioselective synthesis of N-aryl amides from aldoximes and aryl halides
Panda, Niranjan,Mothkuri, Raghavender,Nayak, Dinesh Kumar
supporting information, p. 1602 - 1605 (2014/03/21)
Ligand-assisted copper-catalyzed reaction of aldoximes with aryl halides is described for the regioselective synthesis of N-aryl amides. This protocol is simple and compatible with a wide range of functional groups attached to the aryl ring of the halides as well as aldoximes. Copyright