to afford triflyl-substituted amines in moderate to high yields. Marked selectivity for tertiary over secondary C–H bonds was observed; primary (methyl) C–H bonds were inert. Addition of hexafluoroisopropanol to inhibit decomposition of 1 dramatically improved the C–H amination efficiencies. Second-order kinetics, activation parameters (negative activation entropy), deuterium isotope effects, and theoretical
[EN] N-(1-ARYLPYRAZOL-4L)SULFONAMIDES AND THEIR USE AS PARASITICIDES<br/>[FR] SULFAMIDES N-(1-ARYLPYRAZOL-4L) ET LEUR UTILISATION EN TANT QU'ANTI-PARASITAIRES
申请人:PFIZER LTD
公开号:WO2005090313A1
公开(公告)日:2005-09-29
The invention relates to a sulfonamide compound of formula (I) or a pharmaceutically, veterinarily or agriculturally acceptable salt or solvate thereof, where the groups R1-R5 are described in the description, to compositions comprising such compounds, processes for their synthesis and their use as parasiticides.