Embodiments of the present disclosure provide for Rh(I) catalysts, methods of making alkenyl substituted arenes (e.g., allyl arene, vinyl arene, and the like), methods of making alkyl substituted arenes, and the like.

Provided are a 3,3,3,3-tetramethyl-1,1-spirobiindane-based monophosphine ligand and intermediates thereof, and preparation methods and uses of the same. The monophosphine ligand is a compound represented by formula I or formula I, or an enantiomer, a raceme or a diastereoisomer thereof, including phosphonite ligands, phosphite ligands, phosphoramidite ester ligands, phosphoric acid and phosphonic amide. The monophosphine ligand is prepared with a known 3,3,3,3-tetramethyl-1,1-spirobiindane-7,7-diol derivative as a raw material through a scheme in which the compound presented by formula II acts as an intermediate. The present disclosure provides a novel monophosphine ligand, which can be used as a ligand in a metal-catalysed organic reactions or in directly catalyzing an organic reaction, especially as a chiral monophosphine ligand widely used in many chiral catalytic reactions such as asymmetric addition, asymmetric hydrogenation, asymmetric coupling, and asymmetric allyl alkylation, having economic practicality and industrial application prospects.

##STR00001##

The invention relates to ylide-functionalized phosphane ligands, the production of same and use in transition metal compounds, as well as the use of same as catalysts in organic reactions.

The invention relates to ylide-functionalized phosphane ligands, the production of same and use in transition metal compounds, as well as the use of same as catalysts in organic reactions.

A highly efficient, Z-selective ring-closing metathesis system for the formation of macrocycles using a stereoretentive, ruthenium-based catalyst supported by a dithiolate ligand is reported. This catalyst is demonstrated to be remarkably active as observed in initiation experiments showing complete catalyst initiation at 20 C. within 10 min. Using easily accessible diene starting materials bearing a Z-olefin moiety, macrocyclization reactions generated products with significantly higher Z-selectivity in appreciably shorter reaction times, in higher yield, and with much lower catalyst loadings than in previously reported systems. Macrocyclic lactones ranging in size from twelve-membered to seventeen-membered rings are synthesized in moderate to high yields (68-79% yield) with excellent Z-selectivity (95%-99% Z).

A method for producing a compound represented by formula (4)

##STR00001##

[R.sup.1-R.sup.5 represent hydrogen atoms, formula (2), or formula (5), and at least one of R.sup.1-R.sup.5 is a group represented by formula (5) (Ar.sup.1Ar.sup.3 are the same as below)],

##STR00002##

the method comprising carrying out deprotection after reacting an amine compound represented by formula (1)

##STR00003##

[R.sup.1-R.sup.5 each independently represent a hydrogen atom or a group represented by formula (2)

##STR00004##

(Ar.sup.1 and Ar.sup.2 represent aryl groups and Ar.sup.3 represents an arylene group, and any two of Ar.sup.1-Ar.sup.3 may bond to form a ring), and at least one of R.sup.1-R.sup.5 is a hydrogen atom] with a compound represented by formula (3)

##STR00005##

(X represents a halogen atom, etc., and R.sup.6-R.sup.8 represent an alkyl group, etc.) in the presence of a catalyst and a base, is a method for producing an aniline derivative suited to efficient industrial production that does not require a large excess of base and oxygen in the process of deprotection.

The present invention relates to a catalyst system comprising a transition metal compound on a solid carrier which is a surface-reacted calcium carbonate. The invention further relates to a method for manufacturing said catalyst system and to its use in heterogeneous catalysis.

Provided herein are methods of catalytic hydrosilylation, including triggerable methods, using metal-ligand complexes as catalysts, characterized by formula ML.sub.xD.sub.y; wherein: M is a metal; x is equal to the oxidation state of M; each D is independently a neutral coordinating ligand; y is zero or an integer selected from the range of 1 to 4; and each L is independently a mono-anionic ligand. L may be a .sup.1,.sup.2-,-disubstituted--alkenyl ligand.

Embodiments of the present disclosure describe a catalyst and/or a precatalyst, in particular a single site catalyst and/or a single site precatalyst, for the oxidation and/or ammoxidation of olefins to produce aldehydes and/or nitriles, methods of preparing a corresponding catalyst and/or precatalyst, in particular single site catalyst and/or single site precatalyst, and methods of using said catalyst and/or precatalyst, in particular said single site catalyst and/or single site precatalyst, to produce aldehydes and/or nitriles.

A process can prepare an isocyanurate compound by hydrosilylation. The compound is a tris[3-(trialkoxysilyl)propyl] isocyanurate, a tris[3-(alkyldialkoxysilyl)propyl] isocyanurate, and/or a tris[3-(dialkylalkoxysilyl)propyl] isocyanurate, The process includes (A) preparing a mixture of at least one carboxylic acid, a platinum catalyst, and 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione; (B) heating the mixture to a temperature in the range of 40 to 140 C.; (C) adding at least one H-silane among a hydrotrialkoxysilane, a hydroalkyldialkoxysilane, and a hydrodialkylalkoxysilane to the mixture; (D) adding at least one alcohol to the mixture prepared in step (C); and (E) isolating the isocyanurate compound.