Isolation of Pure Disubstituted E Olefins through Mo-Catalyzed Z-Selective Ethenolysis of Stereoisomeric Mixtures
摘要:
Monoaryloxide-pyrrolide (MAP) complexes of molybdenum were employed for the selective ethenolysis of 1,2-disubstituted Z olefins in the presence of the corresponding E olefins. Reactions were performed in the presence of 0.02-3.0 mol % catalyst at 22 degrees C under 20 atm ethylene. We have demonstrated that the Z isomer of an easily accessible E:Z mixture can be destroyed through ethenolysis and the E alkene thereby isolated readily in high yield and exceptional stereoisomeric purity.
Compounds of formula I
wherein the substituents are as defined in claim 1, and the agrochemically acceptable salts and all stereoisomers and tautomeric forms of the compounds of formula I can be used as insecticides and can be prepared in a manner known per se.
[EN] PESTICIDALLY ACTIVE CYCLIC AMINE COMPOUNDS<br/>[FR] COMPOSÉS D'AMINE CYCLIQUE À ACTION PESTICIDE
申请人:SYNGENTA CROP PROTECTION AG
公开号:WO2021160680A1
公开(公告)日:2021-08-19
Compounds of formula (I) wherein the substituents are as defined in claim 1, and the agrochemically acceptable salts, stereoisomers, enantiomers, tautomers and N-oxides of those compounds, can be used as insecticides.
[EN] PESTICIDALLY ACTIVE PYRROLE DERIVATIVES<br/>[FR] DÉRIVÉS DE PYRROLE ACTIFS SUR LE PLAN PESTICIDE
申请人:SYNGENTA PARTICIPATIONS AG
公开号:WO2019068819A1
公开(公告)日:2019-04-11
Compounds of formula (I) as defined herein, to processes for preparing them, to pesticidal, in particular insecticidal, acaricidal, molluscicidal and nematicidal compositions comprising them and to methods of using them to combat and control pests such as insect, acarine, mollusc and nematode pests.