N-PHENYL-1,1,1-TRIFLUOROMETHANESULFONAMIDE HYDRAZONE DERIVATIVE COMPOUNDS AND THEIR USAGE IN CONTROLLING PARASITES
申请人:Winzenberg Norman Kevin
公开号:US20070238700A1
公开(公告)日:2007-10-11
Novel N-phenyl-1,1,1-trifluoromethanesulfonamide compounds useful for controlling endo and/or ectoparasites in the environment are provided, together with methods of making the same, and methods of using the inventive compounds to treat parasite infestations in vivo and ex vivo.
A previously elusive RuII‐catalyzed N−N bond‐based traceless C−H functionalization strategy is reported. An N‐amino (i.e., hydrazine) group is used for the directed C−H functionalization with either an alkyne or an alkene, affording an indole derivative or olefination product. The synthesis features a broad substrate scope, superior atom and step economy, as well as mild reaction conditions.
Co(III)-catalyzed, internal and terminal alkyne-compatible indole synthesis protocol is reported herein. The N-amino (hydrazine) group imparts distinct, diverse reactivity patterns for directed C–H functionalization/cyclization reactions. Notable synthetic features include regioselectivity for a meta-substituted arylhydrazine, regioselectivity for a chain-branched terminalalkyne, formal incorporation of
A hydrazine-directed Rh(<scp>iii</scp>) catalyzed (4+2) annulation with sulfoxonium ylides: synthesis and photophysical properties of dihydrocinnolines
作者:Pothapragada S. K. Prabhakar Ganesh、Perumal Muthuraja、Purushothaman Gopinath
DOI:10.1039/d1cc06353g
日期:——
catalyzed (4+2) annulation of N-alkyl aryl hydrazines with sulfoxonium ylides as a safe carbene precursor. The reaction shows excellent functional group tolerance with broad substrate scope, scalability and site selectivity. Finally, photophysical studies indicated that some of these compounds have interesting fluorescence properties.
我们在此报告了肼定向、Rh( III ) 催化的 (4+2) N-烷基芳基肼与锍叶立德的环化反应,作为一种安全的卡宾前体。该反应显示出优异的官能团耐受性,具有广泛的底物范围、可扩展性和位点选择性。最后,光物理研究表明,其中一些化合物具有有趣的荧光特性。
Access to the Cinnoline Scaffold via Rhodium-Catalyzed Intermolecular Cyclization under Mild Conditions
Herein, we report Rh(III)-catalyzed, N-amino (hydrazine)-directed C–H functionalization with α-diazo-β-ketoesters for access to the cinnoline scaffold. A diverse set of nondiscriminating conditions obtained for a highly efficient test transformation prompted use of a substrate-replacement technique for an in-depth search of experimental parameter space and pinpointing of the optimized conditions. A