The present invention relates to novel triazole derivatives, to processes for preparing these compounds, to compositions comprising these compounds, and to the use thereof as biologically active compounds, especially for control of harmful microorganisms in crop protection and in the protection of materials and as plant growth regulators.
Ruthenium(II) oxidase catalysis by direct dioxygen‐coupled turnover enabled step‐economical oxidative CH alkenylation reactions at ambient pressure. Versatile ruthenium(II) biscarboxylate catalysts displayed ample substrate scope and proved applicable to weaklycoordinating and removable directing groups. The twofold CH functionalization strategy was characterized by exceedingly mild reaction conditions
Ruthenium(II)-Catalyzed CH Alkenylations of Phenols with Removable Directing Groups
作者:Wenbo Ma、Lutz Ackermann
DOI:10.1002/chem.201301988
日期:2013.10.4
Cationic ruthenium(II) complexes enabled oxidativealkenylations of phenols bearing easily cleavable directing groups. The optimized catalytic system allowed twofold CH bond activations with excellent chemo‐, site‐, and diastereoselectivities. The double CH functionalization process proceeded efficiently in an aerobic fashion under an atmosphere of ambient air. Detailed mechanistic studies were performed
Ruthenium-Catalyzed C–H Bond Arylations of Arenes Bearing Removable Directing Groups via Six-Membered Ruthenacycles
作者:Lutz Ackermann、Emelyne Diers、Atul Manvar
DOI:10.1021/ol3000876
日期:2012.2.17
Ruthenium-catalyzed direct arylations of phenols bearing removable directing groups were accomplished through carboxylate assistance via six-membered ruthenacycles as key intermediates.