Discovery of ectoparasiticidal hydrazonotrifluoromethanesulfonanilides
作者:Abdelselam Ali、Petr Fisara、Jamie A. Freemont、Stella Kyi、Adam G. Meyer、Andrew G. Riches、Roger M. Sargent、David G. Sawutz、Kathleen A. Turner、Kevin N. Winzenberg、Qi Yang
DOI:10.1016/j.bmcl.2009.11.054
日期:2010.1
A series of hydrazonotrifluorosulfonanilide derivatives were synthesized and evaluated for in vitro activity against the ectoparasites Ctenocephalides felis and Rhipicephalus sanguineus. Some compounds with excellent activity against tick were identified. (C) 2009 Elsevier Ltd. All rights reserved.
Routes for the selective synthesis of 1-, or 2-substituted hydrazides, and 1,2-disubstituted hydrazides are reported. These routes proceed via cyanoborohydride reduction of stable acyl hydrazone intermediates.
Synthesis of phthalazinones via palladium(ii)-catalysed intramolecular oxidative C–H/C–H cross-coupling of N′-methylenebenzohydrazides
作者:Takanori Matsuda、Yuki Tomaru、Yoshiya Matsuda
DOI:10.1039/c3ob40195b
日期:——
A palladium(II)-catalysed intramolecular oxidative C–H/C–H cross-coupling of N′-methylenebenzohydrazides to phthalazin-1(2H)-ones has been developed. This cyclization is believed to mechanistically proceed via electrophilic ortho-palladation and subsequent C-arylation of the carbon–nitrogen double bond.