[EN] SYSTEM PROVIDING CONTROLLED DELIVERY OF GASEOUS CO FOR CARBONYLATION REACTIONS<br/>[FR] SYSTÈME PERMETTANT LA LIBÉRATION CONTRÔLÉE DE CO GAZEUX POUR RÉACTIONS DE CARBONYLATION
申请人:UNIV AARHUS
公开号:WO2012079583A1
公开(公告)日:2012-06-21
A carbonylation system comprising at least one carbon monoxide producing chamber and at least one carbon monoxide consuming chamber forming an interconnected multi-chamber system, said interconnection allowing carbon monoxide to pass from the at least one carbon monoxide producing chamber to the at least one carbon monoxide consuming chamber, said at least one carbon monoxide producing chamber containing a reaction mixture comprising a carbon monoxide precursor and a catalyst, said at least one carbon monoxide consuming chamber being suitable for carbonylation reactions, said interconnected multi- chamber system being sealable from the surrounding atmosphere during carbonylation.
In a cross coupling reaction, in a case where a halogen atom is selected as the leaving group of the raw material compound, a harmful halogen waste forms as a by-product after the reaction, and disposal of the waste liquid is complicated and environmental burden is high. In a carbon-hydrogen activation cross coupling reaction which requires no halogen atom as the leaving group, although no halogen waste forms as a by-product, the reaction substrate is considerably restricted, and the reaction remains a limited molecular construction method.
A method for producing an aromatic compound, which comprises subjecting an aromatic nitro compound and a boronic acid compound to a cross coupling reaction in the presence of a metal catalyst.
New cyclopentadienyl, indenyl or fluorenyl substituted phosphine compounds and their use in catalytic reactions
申请人:Evonik Degussa GmbH
公开号:EP1894938A1
公开(公告)日:2008-03-05
The invention is directed to a phosphine compound represented by general formula (1)
wherein
R' and R" independently are selected from alkyl, cycloalkyl and 2-furyl radicals, or R' and R" are joined together to form with the phosphorous atom a carbon-phosphorous monocycle comprising at least 3 carbon atoms or a carbon-phosphorous bicycle; the alkyl radicals, cycloalkyl radicals, and carbon-phosphorous monocycle being unsubstituted or substituted by at least one radical selected from the group of alkyl, cycloalkyl, aryl, alkoxy, and aryloxy radicals;
Cps is a partially substituted or completely substituted cyclopentadien-1-yl group, including substitutions resulting in a fused ring system, and wherein a substitution at the 1-position of the cyclopentadien-1-yl group is mandatory when the cyclopentadien-1-yl group is not part of a fused ring system or is part of an indenyl group. Also claimed is the use of these phosphines as ligands in catalytic reactions and the preparation of these phosphines.
[EN] NEW RUTHENIUM COMPLEXES AS CATALYSTS FOR METATHESIS REACTIONS<br/>[FR] NOUVEAUX COMPLEXES DU RUTHÉNIUM COMME CATALYSEURS POUR DES RÉACTIONS DE MÉTATHÈSE
申请人:HOFFMANN LA ROCHE
公开号:WO2009124853A1
公开(公告)日:2009-10-15
The invention relates to novel metathesis catalysts of the formula (I) a process for making the same and their use in metathesis reactions such as ring closing or cross metathesis. The invention further relates to a process for the manufacture of a macrocyclic compound of formula (VII) which have the potential to be useful as HCV protease inhibitors.
[EN] METHOD FOR COUPLING AN AROMATIC COMPOUND TO AN ALKYNE<br/>[FR] PROCÉDÉ DE COUPLAGE D'UN COMPOSÉ AROMATIQUE À UN ALCYNE
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:WO2017030971A1
公开(公告)日:2017-02-23
In one aspect, there is provided a method of coupling an aromatic compound having a fluorosulfonate substituent to an alkyne. In another aspect, there is provided a method of coupling an aromatic compound having a hydroxyl substituent to an alkyne in a one-pot reaction.