Phosphorus compounds

PCT No. PCT/CH93/00016 Sec. 371 Date Sep. 24, 1993 Sec. 102(e) Date Sep. 24, 1993 PCT Filed Jan. 22, 1993 PCT Pub. No. WO93/15089 PCT Pub. Date Aug. 5, 1993.Novel, racemic and optically active phosphorus compounds of the formula I wherein R signifies lower alkyl, lower alkoxy, hydroxy or a protected...

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Hauptverfasser:	BROGER, EMIL A, CEREGHETTI, MARCO
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Zusammenfassung:	PCT No. PCT/CH93/00016 Sec. 371 Date Sep. 24, 1993 Sec. 102(e) Date Sep. 24, 1993 PCT Filed Jan. 22, 1993 PCT Pub. No. WO93/15089 PCT Pub. Date Aug. 5, 1993.Novel, racemic and optically active phosphorus compounds of the formula I wherein R signifies lower alkyl, lower alkoxy, hydroxy or a protected hydroxy group, R1 and R2 are different from each other and represent lower alkyl, cycloalkyl, aryl, a five-membered heteroaromatic or a group of the formula are described. The compounds of formula I are useful in the form of complexes with a metal of Group VIII as catalysts for asymmetric hydrogenations and for enantioselective hydrogen displacements in prochiral allylic systems.