作者:Abolghasem (Gus) Bakhoda、Quan Jiang、Yosra M. Badiei、Jeffery A. Bertke、Thomas R. Cundari、Timothy H. Warren
DOI:10.1002/anie.201810556
日期:2019.3.11
functionalizing stronger primary and secondary C−H bonds over tertiary and benzylic C−H sites. Herein, we report a Cu catalyst that exhibits a high degree of primary and secondary over tertiary C−H bond selectivity in the amidation of linear and cyclic hydrocarbons with aroyl azides ArC(O)N3. Mechanistic and DFT studies indicate that C−H amidation involves H‐atom abstraction from R‐H substrates by nitrene intermediates
TFFH AS A USEFUL REAGENT FOR THE CONVERSION OF CARBOXYLIC ACIDS TO ANILIDES, HYDRAZIDES AND AZIDES
作者:A. El-Fahm、M. Abdul-Ghani
DOI:10.1080/00304940309355842
日期:2003.8
carboxylic acids. Moreover, TFFH is also a very convenient reagent for the preparation of isothiocyanates from the corresponding primary amines in the presence of carbon disulfide.4 The present work describes the utility of TFFH for conversion of carboxylic acid to anilides, dihydrazides and acyl azides. In preliminary studies, several anilides were prepared by activation of an equimolar solution of a carboxylic
Marine animals and plants provide abundant secondary metabolites with antitumor activity. Itampolin A is a brominated natural tyrosine secondary metabolite that is isolated from the sponge Iotrochota purpurea. Recently, we have achieved the first total synthesis of this brominatedtyrosine secondary metabolite, which was found to be a potent p38α inhibitor exhibiting anticancer effects. A fragment-based