protocol for the reductive functionalization of amides into N‐sulfonylformamidines is reported. The one‐pot procedure is based on a mild catalyticreduction of tertiary amides into the corresponding enamines by the use of Mo(CO)6 (molybdenum hexacarbonyl) and TMDS (1,1,3,3‐tetramethyldisiloxane). The formed enamines were allowed to react with sulfonyl azides to give the target compounds in moderate to
Sulfo-click reaction via in situ generated thioacids and its application in kinetic target-guided synthesis
作者:Niranjan Kumar Namelikonda、Roman Manetsch
DOI:10.1039/c1cc14724b
日期:——
Herein, we describe a practical, one-pot variant of the sulfo-click reaction, in which 9-fluorenylmethyl-protected thioesters are rapidly deprotected and reacted further with sulfonylazides to give N-acyl sulfonamides.
The present invention discloses a new method for synthesizing an amide based on a fundamental mechanistic revision of the reaction of thio acids and organic azides. Moreover, the application of this method to the selective preparation of several classes of complex amides in nonpolar and polar solvents, including water, is provided.
作者:Robert V. Kolakowski、Ning Shangguan、Ronald R. Sauers、Lawrence J. Williams
DOI:10.1021/ja057533y
日期:2006.5.1
A combined experimental and computational mechanistic study of amide formation from thioacids and azides is described. The data support two distinct mechanistic pathways dependent on the electronic character of the azide component. Relatively electron-rich azides undergo bimolecular coupling with thiocarboxylates via an anion-accelerated [3+2] cycloaddition to give a thiatriazoline. Highly electron-poor
Manganese-Catalyzed <i>ortho</i>-C-H Amidation of Weakly Coordinating Aromatic Ketones
作者:Xianqiang Kong、Bo Xu
DOI:10.1021/acs.orglett.8b01770
日期:2018.8.3
An efficient manganese-catalyzed ortho-C-H amidation of weakly coordinating aromaticketones using the readily available sulfonyl azide as the amination reagent is developed. The key step is the ketone directed aromatic metalation using the in situ generated reactive Mn intermediate, MnMe(CO)5. This method offers excellent chemical yields, high regioselectivities, and good functional group tolerance