Improved and expanded one-pot, two-component Boulton-Katritzky syntheses of N–N bond containing bicyclic heterocycles
作者:Kyle W. Knouse、Laura E. Ator、Lauren E. Beausoleil、Zachary J. Hauseman、Rebecca L. Casaubon、Gregory R. Ott
DOI:10.1016/j.tetlet.2016.11.092
日期:2017.1
two-component syntheses of bicyclic heterocycles containing a 3-N-acyl-3-amino-1,2-pyrazole motif from N′-hydroxy-carboxyamidines and acylbenzotriazoles have been developed. Importantly, this sequence obviates the need for hydrazine or N-aminating reagents to synthesize the key nitrogen–nitrogen (N–N) bond of these heterocycles, which is formed via Boulton-Katritzky rearrangement. A diverse array of pharmaceutically