[EN] PYRAZOLE COMPOUNDS AND THEIR USE AS T-TYPE CALCIUM CHANNEL BLOCKERS [FR] COMPOSÉS DE PYRAZOLE ET LEUR UTILISATION EN TANT QUE BLOQUEURS DES CANAUX CALCIQUES DE TYPE T
The trifluoromethylcarbene (:CHCF3) was found to be conveniently generated from (2,2,2-trifluoroethyl)diphenyl-sulfonium triflate (Ph2S+CH2CF3–OTf), which was successfully applied in Fe-catalyzed cyclopropanation of olefins, giving the corresponding trifluoromethylated cyclopropanes in high yields.
[EN] NOVEL CARBOXAMIDE COMPOUNDS<br/>[FR] NOUVEAUX COMPOSÉS DE CARBOXAMIDE
申请人:SYNGENTA PARTICIPATIONS AG
公开号:WO2014131572A1
公开(公告)日:2014-09-04
Compounds of the formula (I), in which the substituents are as defined in claim 1, are suitable for use as nematicides.
式(I)中的化合物,其中取代基如权利要求书中定义的那样,适用于用作杀线虫剂。
Asymmetric Synthesis of Trifluoromethylphenyl Cyclopropanes Catalyzed by Chiral Metalloporphyrins
作者:Gérard Simonneaux、Paul Le Maux、Sandrine Juillard
DOI:10.1055/s-2006-926451
日期:2006.5
The asymmetric addition of 2,2,2-trifluorodiazoethane to styrene derivatives to give optically active trifluoromethylphenyl cyclopropanes (ee values up to 69%) was carried out by using chiral iron and ruthenium porphyrins as homogeneous and heterogeneous catalysts.
Enantioselective Cobalt-Catalyzed Preparation of Trifluoromethyl-Substituted Cyclopropanes
作者:Bill Morandi、Brian Mariampillai、Erick M. Carreira
DOI:10.1002/anie.201004269
日期:2011.2.1
Easy access on water: A cobalt‐catalyzed asymmetric preparation of trifluoromethylcyclopropanes has been developed that yields high enantioselectivities with a broad range of styrene substrates (see scheme). The reaction presents a new access to enantioenriched CF3‐containing building blocks.
Iron-Catalyzed Cyclopropanation with Trifluoroethylamine Hydrochloride and Olefins in Aqueous Media: In Situ Generation of Trifluoromethyl Diazomethane
作者:Bill Morandi、Erick M. Carreira
DOI:10.1002/anie.200905573
日期:2010.1.25
Let's avoid the risk! The title transformation has been developed for the synthesis of trifluoromethyl‐substituted cyclopropane derivatives (see scheme). It avoids the preparation of trifluoromethyldiazomethane and merges a number of areas: water as a reaction medium, iron catalysis, and access to reactive intermediates under operationally safe conditions.