P-chirogenic organophosphorus compounds of general formula (I), a process for the synthesis of the compounds of formula (I), and intermediate products of general formulae (II), (III) and (IV), as shown below, are involved in the synthesis of compounds (I). ##STR00001## Metal complexes comprising compounds (I) as ligands are also described. The compounds and complexes are useful in asymmetric catalysis by transition metal complexes or organocatalysis, especially for asymmetric hydrogenation or allylation. Compounds of general formula (I) may be useful as agrochemical and therapeutic substances, or as reagents or intermediates for fine chemistry.

The present invention relates to a process for preparing hydridocarbonyltris(triphenylphosphine)rhodium(I), RhH(CO)(PPh.sub.3).sub.3, also referred to hereinafter as Rh-hydrido. An alcoholic suspension of triphenylphosphine is stirred with an Rh(III) chloride precursor at elevated temperature. The Rh(III) chloride precursor used may be rhodium(III) chloride hydrate RhCl.sub.3*xH.sub.2O or rhodium(III) chloride solution H.sub.3[RhCl.sub.6]*(H.sub.2O).sub.n. After cooling, alcoholic alkali metal hydroxide solution is added, and the mixture is stirred for a few hours. Finally, sparging is effected with CO gas and the Rh-hydrido formed is removed. Rh-hydrido can be prepared by this process on the industrial scale with high yields and at very good quality.

Novel complexes of diphenyl selenoxides and also use thereof and methods in which the complexes are used.

Novel organodiaryl selenoxides and processes for preparation thereof, and use thereof as ligand in complexes.

Tridentate platinum, palladium, and gold complexes of Formulas A-I and A-II and tridentate iridium and rhodium compounds of Formulas B-I, B-II, and B-III suitable for delayed fluorescent and phosphorescent or phosphorescent emitters in display and lighting applications.

##STR00001##

A compound of the formula: ##STR00001##
Also, a method for antagonizing STAT3 dimerization in a patient in need thereof which by administering to such patient a therapeutically acceptable dose of the compound of Formula I. Further, a method for treating a cancer patient in need thereof by administering a therapeutically effective dose of the compound of Formula I.

The invention relates to bisphosphites having 2,4-dimethylphenyl units and a method for the preparation thereof. Furthermore, the invention relates to the use of the compounds as ligands in a ligand-metal complex. The compound, and also the complex, may be used as a catalytically active composition in hydroformylation reactions.

Monophosphites having an unsymmetric biaryl structure and metal complexes thereof are provided. The metal complex compositions are useful as hydroformylation catalysts. The metals of the complex include Rh, Ru, Co and Ir. A method of hydroformylation using the metal complex or the metal complex components is also provided.

An aryl phosphine with fused ring ortho-alkoxy substitution that includes an aryl monophosphine and an aryl bi-sphosphme.

The present invention deals with the synthesis and applications of new cationic compounds being useful as metal ligands. Specifically, N-alkyl/aryl substituted pyridiniophosphines are prepared and used as ligands for transition metals. The so-obtained metal complexes and their use as catalysts in chemical synthesis is also described. It also worth mentioning that N-alkyl/aryl pyridiniophosphines can be synthesized through a short, scalable and highly modular route.