| Patent Number |
Title Of Patent |
Date Issued |
| 6927262 |
Bridged biphospholes and metallocenes prepared therefrom |
August 9, 2005 |
| The invention relates to novel bridged biphosphole ligands according to the general formula: ##STR1##where R.sup.2, R.sup.3, R.sup.4 are chosen from hydrogen, alkyl, aryl or silyl, R.sup.1 is chosen from hydrogen, alkyl, aryl or halogen, R.sup.1 possibly being replaced with a direct |
| 6683208 |
Optically active diphosphines, preparation thereof according to a process for the resolution of |
January 27, 2004 |
| New optically active bis[1-phospha-2,3-diphenyl-4,5-dimethylnorbornadiene] diphosphines and new optically active transition metal complexes with said phosphines are described. The complexes are useful as catalysts to promote hydrogenation of substrates. |
| 6632969 |
Method for separating a diphosphine diastereoisomers |
October 14, 2003 |
| A process for separating the (d/l) and (meso) diastereoisomers of bis-[1-phospha-2,3-diphenyl-4,5-dimethylnorbornadiene] comprising converting the mixture of diastereoisomers of bis-[1-phospha-2,3-diphenyl-4,5-dimethylnorbornadiene] to a mixture of the corresponding diastereoisomers |
| 6521795 |
6,6'-bis-(1-phosphanorbornadiene) diphosphines, their preparation and their uses |
February 18, 2003 |
| A subject of the present invention is new 6,6'-bis-(1-phosphanorbornadiene) diphosphines, their preparation process and their use in asymmetrical catalysis.The new diphosphines correspond to general formula (I): ##STR1##in which R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 are as defined |
| 6417375 |
Furylphosphines and organometallic complexes containing them |
July 9, 2002 |
| The present invention relates to novel water-soluble furylphosphines.It also relates to organometallic complexes comprising these furylphosphines and to the use of such complexes.It also relates to the process for the preparation of the water-soluble furylphosphines. |
| 6380412 |
Optically active diphosphines, preparation thereof according to a process for the resolution of |
April 30, 2002 |
| The present invention relates to optically active diphosphines. It is also targeted at their preparation according to a process for the resolution of the racemic mixture of the said phosphines to optically active isomers. The subject of the invention is new optically active bis[1-pho |
| 6288279 |
6',6-bis-(1-phosphanorbornadiene) diphosphines |
September 11, 2001 |
| A subject of the present invention is new 6,6'-bis-(1-phosphanorbornadiene) diphosphines, their preparation process and their use in asymmetrical catalysis.The new diphosphines correspond to general formula (I): ##STR1## |
| 6166257 |
Asymmetric hydrogenation method of a ketonic compound and derivative |
December 26, 2000 |
| The present invention relates to a process for the asymmetric hydrogenation of a ketonic compound and derivative.The invention relates to the use of optically active metal complexes as catalysts for the asymmetric hydrogenation of a ketonic compound and derivative.The process for the asy |
| 6037493 |
Optically active diphosphines, preparation thereof according to a process for the resolution of |
March 14, 2000 |
| The present invention relates to optically active diphosphines. It is also targeted at their preparation according to a process for the resolution of the racemic mixture of the said phosphines to optically active isomers.The subject of the invention is new optically active bis[1-phospha- |
| 5783738 |
Optically active diphosphines, preparation thereof according to a process for the resolution of |
July 21, 1998 |
| The present invention relates to optically active diphosphines. It is also targeted at their preparation according to a process for the resolution of the racemic mixture of the said phosphines to optically active isomers. The subject of the invention is new optically active bis[1-pho |
| 4504683 |
Phospholes with functional substituents on the phosphorus and process for the preparation of pho |
March 12, 1985 |
| The phospholes and P-functional phospholes correspond to the general formula: ##STR1## in which: R.sub.1 and R.sub.2 are identical or different and represent hydrogen or a lower alkyl group of C.sub.1 to C.sub.4 such as a methyl group, and R.sub.3 represents an aryl group (such a |
| 4404147 |
Process for the synthesis of 1,1-diphosphaferrocenes |
September 13, 1983 |
| The invention relates to the manufacture of 1,1'-diphosphaferrocenes.The process consists of reacting a mixture of an alkali metal phenyl and an alkali metal phospholyl in the presence of a Lewis acid, in a basic ether, preferably at between -20.degree. and +20.degree. C., and then reacting |
| 4193978 |
Production of hydrogen |
March 18, 1980 |
| Method of utilizing lithium borohydride for the storage and generation of hydrogen where the lithium borohydride is thermally decomposed to generate hydrogen and the remaining decomposition products (contaning boron in free or combined form and lithium in free or combined form) are hydro |
| 4173706 |
Process for producing fluorinated organic compounds containing a difluoromethylene group from co |
November 6, 1979 |
| A novel process for producing fluorinated organic compounds containing a difluoromethylene group, essentially characterized by reacting organic compounds containing a carbonyl function with molybdenum hexafluoride at room temperature and under atmospheric pressure. |
