Hypervalent Iodine(III)-Promoted Phenyl Transfer Reaction from Phenyl Hydrazides to Nitriles
作者:Yan Yan、Zhiguo Zhang、Yameng Wan、Guisheng Zhang、Nana Ma、Qingfeng Liu
DOI:10.1021/acs.joc.7b01215
日期:2017.8.4
nitriles to N-phenyl amides has been achieved through a novel intermolecular phenyl transfer reaction from phenyl hydrazides and N-addition to nitriles in the presence of PIFA under mild and solvent-free conditions. This cross-coupling reaction includes the oxidative cleavage of sp2 C–N bonds of phenyl hydrazides to form a phenyl radical and the subsequent N-addition to cyanos to form new sp2 C–N bonds
Kobs, Uwe; Neumann, Wilhelm P., Chemische Berichte, 1990, vol. 123, # 11, p. 2191 - 2194
作者:Kobs, Uwe、Neumann, Wilhelm P.
DOI:——
日期:——
KOBS, UWE;NEUMANN, WILHELM P., CHEM. BER., 123,(1990) N1, C. 2191-2194
作者:KOBS, UWE、NEUMANN, WILHELM P.
DOI:——
日期:——
An Atom-Economical Method for the Formation of Amidopyrroles Exploiting the Self-Assembled Resorcinarene Capsule
作者:Pellegrino La Manna、Carmen Talotta、Margherita De Rosa、Annunziata Soriente、Carmine Gaeta、Placido Neri
DOI:10.1021/acs.orglett.0c00529
日期:2020.4.3
Here is reported the first example of an organocatalyzed coupling between pyrrole and isocyanates in a nanoconfined space. The hexameric resorcinarene capsule C is able to catalyze the direct coupling between isocyanates and pyrroles to give amidopyrroles with excellent yields and selectivities. The reaction catalyzed by C prevents the use of expensive and poorly atom-economical reagents. As in natural
generally exist in cis conformation both in the crystalline state and in various solvents, and this cis conformational preference can be utilized to construct dynamic helical oligoamides. Here, we synthesized the pyrrole-containing amides 2–5 and their oligomers 6–8 and examined their conformations in the crystalline state and in solution. All the N-methylated amides showed cis conformational preference in