Conformational studies of tertiary oligo-m-benzanilides and oligo-p-benzanilides in solution
摘要:
A series of oligo-m- and p-benzanilides were made and their conformations in solution were studied by NMR. In most cases, conformational mixtures were observed as soon as three or more monomers were incorporated into the oligomer. Some crystal structures were obtained, which indicated that helical conformations were adopted in the solid state. (C) 2010 Elsevier Ltd. All rights reserved.
Conformational studies of tertiary oligo-m-benzanilides and oligo-p-benzanilides in solution
摘要:
A series of oligo-m- and p-benzanilides were made and their conformations in solution were studied by NMR. In most cases, conformational mixtures were observed as soon as three or more monomers were incorporated into the oligomer. Some crystal structures were obtained, which indicated that helical conformations were adopted in the solid state. (C) 2010 Elsevier Ltd. All rights reserved.
Transition metal-free N-arylation of secondary amides through iodonium salts as aryne precursors
作者:Ming Wang、Zhijian Huang
DOI:10.1039/c6ob01649a
日期:——
By using a diaryliodonium salt as a benzyne precursor, a transition metal-freeapproach for N-arylation of secondary amides is developed. This novel benzyne precursor, which can be prepared easily by a one step process from an aryl iodide, shows different reactivities with previous benzyne precursors in the N-arylation reaction. Mechanistic studies confirm the involvement of benzyne species (generated
A series of oligo-m- and p-benzanilides were made and their conformations in solution were studied by NMR. In most cases, conformational mixtures were observed as soon as three or more monomers were incorporated into the oligomer. Some crystal structures were obtained, which indicated that helical conformations were adopted in the solid state. (C) 2010 Elsevier Ltd. All rights reserved.