Homogenous and Heterogenous Catalysts, Enzymes and Metathesis from Johnson Matthey
31 July 2007
D'Orland represents Johnson Matthey Catalysts and Chiral Technologies in Hungary, Poland, The Czech and Slovak Republics as well as Croatia and Slovenia for their excellent range of Heterogenous, Homogenous, Sponge Nickel and Metal scavenging agents, the latter being marketed under the Smopex name.If a catalyst could be of interest for your rection, then please do not hesitate to contact us and we will endevour to recommend the ideal catalyst for the synthesis in question.
There is also a wealth of information available to help with the correct choice of catalyst, be it a homogenous or heterogenous one. A good place to start is the catalyst technical handbook We can of course also post the very useful reaction guide to interested parties, but the Hetergenous Screening Kit certainly should be part of any laboratory where catalysis is being looked at and every kit kit comes with an excellent reaction chart. That a number of factors can affect the performance of a catalyst and that a 5 % or 10 % Palladium on Carbon is not just that, is show on the following sheets concerning O-Debenzylation and N-Benzylation.
For homogenous catalytic reactions the Coupling Table should enable the choice of an ideal catalyst and again there is a Chiral Coupling Kit available. Details of other homogenous catalytic reactions using rhodium, iridium and ruthernium are can be downloaded as well as information on Chiral Technologies for carbon - oxygen and carbon nitrogen coupling reactions.
There is of course also more information on the fourth generation of coupling catalysts, where Pd-118 ( Dichloro [1,1'-bis (di-tert butyl-phosphino) ferrocene] Palladium (II) ) could be of particular interest due to the fact that it is both air and moisture stable enabling some reactions to be carried out in a mixture of water and ethanol and avoiding the need for the catalyst to be stored in a glove box.
Johnson Matthey have also recently added a range of catalytic enzymes to their range, which show high enantiouselectivity particularly for ketone reductions.
A range of Metathesis Catalysts has also been introduced recently and these do currently fall outside the scope of the patents on the Grubbs type catalysts.
The good old tried and trusted Sponge Metal Catalysts which are made by the Raney Process, are of course also available!
Lastly, Smopex® should not be forgotten and a short presentation about Smopex illustrates why it should always be considered when a precious metal catalyst is used to recover as much of the palladium, platinum, ruthenium or rhodium as possible.
D'Orland KEG Ltd.
D'Orland KEG Ltd - leading suppliers of specialist raw materials from the world's most innovative producers to the Pharmaceutical, Fine Chemical and Food Ingredients markets in Central and Eastern Europe.
