Elusive ethynyl azides: trapping by 1,3-dipolar cycloaddition and decomposition to cyanocarbenes
作者:Klaus Banert、Manfred Hagedorn、Jens Wutke、Petra Ecorchard、Dieter Schaarschmidt、Heinrich Lang
DOI:10.1039/c0cc00079e
日期:——
Although they decompose rapidly to produce cyanocarbenes, ethynyl azides were generated from (chloroethynyl)arenes and trapped for the first time by 1,3-dipolar cycloaddition at cyclooctyne.
Atmospheric Oxygen Facilitated Oxidative Amidation to α-Ketoamides and Unusual One Carbon Degradative Amidation to <i>N</i>-Alkyl Amides
作者:Jaydeepbhai P. Jadav、Jigarkumar K. Vankar、Ankush Gupta、Guddeangadi N. Gururaja
DOI:10.1021/acs.joc.3c00457
日期:2023.11.17
form oxidative amidation product α-ketoamides and unusual degradative amidation product N-alkyl amides by simply changing the amine substitute. Atmospheric air containing molecular oxygen proved to be an ideal oxidant for an amidation reaction. Under similar conditions, the electron-deficient gem-dibromoalkenes play a dual role with different formamides forming novel oxidative amidation products and