Rapid Access to 3-Aminoindazoles from Tertiary Amides
作者:Patrick Cyr、Sophie Régnier、William S. Bechara、André B. Charette
DOI:10.1021/acs.orglett.5b00765
日期:2015.7.17
two-step synthesis of structurally diverse 3-aminoindazoles from readily available starting materials was developed. This sequence includes a one-pot synthesis of aminohydrazones through chemoselective Tf2O-mediated activation of tertiary amides and subsequent addition of nucleophilic hydrazides. These precursors then participate in an intramolecularligand-free Pd-catalyzed C–H aminationreaction. The