azidation of unactivated aliphatic C–H bonds with easily handled sulfonylazides as azide source without the use of transitionmetals has been explored. This method is operationally simple, scalable, and applicable to late-stage azidation of natural products and derivatives, which make it a valuable method for the synthesis of organic azides.
A facile, one-pot procedure for the conversion of aromatic aldehydes to esters, as well as thioesters and amides, via acyl hydrazide intermediates
作者:Antoine Maruani、Maximillian T. W. Lee、George Watkins、Ahmed R. Akhbar、Henry Baggs、André Shamsabadi、Daniel A. Richards、Vijay Chudasama
DOI:10.1039/c5ra26842g
日期:——
Herein we present an efficient method for the synthesis of esters from aromatic aldehydes via readily accessible acyl hydrazides. The developed reaction protocol is shown to be tolerant of a range of aromatic aldehydes, bearing various functionalities, as well as being amenable to the synthesis of thioesters and amides.
Mechanistic Investigation of the Iron-Catalyzed Azidation of Alkyl C(<i>sp</i><sup>3</sup>)–H Bonds with Zhdankin’s λ<sup>3</sup>-Azidoiodane
作者:Craig S. Day、Alexander Fawcett、Ruchira Chatterjee、John F. Hartwig
DOI:10.1021/jacs.1c07330
日期:2021.10.6
resultant alkylradical then combines rapidly with a resting state iron(III)-azide complex, which is generated by the reaction of the λ3-azidoiodane with the iron(II)(pybox) complex, to form the C(sp3)–N3 bond. This mechanism is supported by the independent synthesis of well-defined iron complexes characterized by cyclic voltammetry, X-ray diffraction, and EPR spectroscopy, and by the reaction of the