DEPROTECTION OF 2-PYRIDYL SULFONYL GROUP FROM PYRIDINE-2-SULFONAMIDES BY MAGNESIUM IN METHANOL
摘要:
Convenient deprotection of various pyridine-2-sulfonamides prepared by sulfonylation of primary and secondary amines with pyridine-2-sulfonylchloride was achieved by magnesium in methanol at 0 degreesC to the corresponding amines in good yield.
DEPROTECTION OF 2-PYRIDYL SULFONYL GROUP FROM PYRIDINE-2-SULFONAMIDES BY MAGNESIUM IN METHANOL
摘要:
Convenient deprotection of various pyridine-2-sulfonamides prepared by sulfonylation of primary and secondary amines with pyridine-2-sulfonylchloride was achieved by magnesium in methanol at 0 degreesC to the corresponding amines in good yield.
Copper-catalyzed ortho-C–H amination of protected anilines with secondary amines
作者:Ángel Manu Martínez、Nuria Rodríguez、Ramón Gómez Arrayás、Juan C. Carretero
DOI:10.1039/c3cc49633c
日期:——
A practical Cu-catalyzed picolinamide-directed o-amination of anilines showing excellent mono-substitution selectivity and high functional group tolerance has been developed.
Nickel-Catalyzed Intramolecular Desulfitative C—N Coupling: A Synthesis of Aromatic Amines
作者:Jiangjun Liu、Xiuwen Jia、Xuemeng Chen、Haotian Sun、Yue Li、Søren Kramer、Zhong Lian
DOI:10.1021/acs.joc.0c00009
日期:2020.4.17
intramolecular C—N coupling reaction via SO2 extrusion is presented. The use of a catalytic amount of BPh3 allows the transformation to take place under much milder conditions (60 °C) than previously reported C—N coupling reactions by CO or CO2 extrusion (160–180 °C). In addition, this method displays good functional group tolerance and versatility, as it can be applied to the synthesis of dialkyl aryl