Synthesis of 6-acyl phenanthridines by oxidative radical decarboxylation–cyclization of α-oxocarboxylates and isocyanides
作者:Jie Liu、Chao Fan、Hongyu Yin、Chu Qin、Guoting Zhang、Xu Zhang、Hong Yi、Aiwen Lei
DOI:10.1039/c3cc49026b
日期:——
A silver catalysed synthesis of 6-acyl phenanthridines by oxidative radical decarboxylation–cyclization of α-oxocarboxylates and isocyanides was developed.
一种通过氧化性自由基脱羧-环化反应合成6-酰基菲啰啉的银催化方法已经开发出来。
Cascade C–H Functionalization/Amidation Reaction for Synthesis of Azepinone Derivatives
A cascade C–H functionalization/amidation reaction of aminobiaryls with diazomalonates has been developed under rhodium catalysis, affording new azepinone derivatives in moderate to excellent yields.
Preparation of phenanthrenes from ortho-amino-biphenyls and alkynes via base-promoted homolytic aromatic substitution
作者:Marcel Hartmann、Constantin Gabriel Daniliuc、Armido Studer
DOI:10.1039/c4cc10063h
日期:——
transition-metal-free phenanthrene synthesis starting from readily accessible ortho-amino-biaryls is presented. The biarylamines are in situ transformed into the corresponding diazonium salts which upon single electron reduction give the corresponding aryl radicals. Addition to an alkyne and subsequent base promoted homolyticaromaticsubstitution (BHAS) provide phenanthrenes in moderate to good yields
Electrochemical Synthesis of Carbazoles by Dehydrogenative Coupling Reaction
作者:Anton Kehl、Niclas Schupp、Valentina M. Breising、Dieter Schollmeyer、Siegfried R. Waldvogel
DOI:10.1002/chem.202003430
日期:2020.12.4
remarkably low supporting electrolyte concentration, inexpensive electrode materials, and a straightforward precursor synthesis enabling a novel access to N‐protected carbazoles by anodic N,C bond formation using directly generated amidyl radicals is reported. Scalability of the reaction is demonstrated and an easy deblocking of the benzoyl protecting group is presented.