765-71-9Relevant articles and documents
Oxalohydrazide Ligands for Copper-Catalyzed C?O Coupling Reactions with High Turnover Numbers
Ray, Ritwika,Hartwig, John F.
supporting information, p. 8203 - 8211 (2021/03/08)
Here, we report a class of ligands based on oxalohydrazide cores and N-amino pyrrole and N-amino indole units that generates long-lived copper catalysts for couplings that form the C?O bonds in biaryl ethers. These Cu-catalyzed coupling of phenols with aryl bromides occurred with turnovers up to 8000, a value which is nearly two orders of magnitude higher than those of prior couplings to form biaryl ethers and nearly an order of magnitude higher than those of any prior copper-catalyzed coupling of aryl bromides and chlorides. This ligand also led to copper systems that catalyze the coupling of aryl chlorides with phenols and the coupling of aryl bromides and iodides with primary benzylic and aliphatic alcohols. A wide variety of functional groups including nitriles, halides, ethers, ketones, amines, esters, amides, vinylarenes, alcohols and boronic acid esters were tolerated, and reactions occurred with aryl bromides in pharmaceutically related structures.
Synthetic application of monoprotected hydrazines toward the synthesis of 1-aminopyrroles
McLeod, Matt,Boudreault, Nicolas,Leblanc, Yves
, p. 1180 - 1183 (2007/10/03)
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Herbicidal and plant-growth-regulating N-substituted-N-(2,5-dialkylpyrrol-1-yl) haloacetamides
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, (2008/06/13)
Compounds of the formula: STR1 wherein R1 and R2 are alkyl or halo; R3 is hydrogen or alkyl; Z is halo; and R4 is alkoxycarbonyl, alkoxy, phenyl, substituted phenyl, a group of the formula STR2 wherein R5 and R6 are hydrogen, alkyl, alkenyl or alkynyl; a group of the formula STR3 wherein R7 and R8 are hydrogen and alkyl; a five or six-membered aromatic heterocyclic ring of the formula STR4 wherein at least one of V, W, X or Y is an oxygen, sulfur or nitrogen atom, R9 is alkyl and n is 0, 1, 2 or 3 have herbicidal and plant-growth-regulating activity.