Disclosed is a method for producing a mono-cross-coupled aromatic compound (3-1) having one less leaving group than an aromatic compound (1) having at least two leaving groups, the method comprising: preparing the aromatic compound (1) having at least two leaving groups; preparing a compound (2) capable of undergoing a cross-coupling reaction selected from an aromatic boronic acid (2-1), an aromatic amino compound (2-2), a diboronic acid ester (2-3), an aromatic compound (2-4) having a hydroxyl group and an aromatic compound (2-5) having a thiol group; and performing a cross-coupling reaction of the aromatic compound (1) having at least two leaving groups with the compound (2) in the presence of a palladium catalyst and a base, in the absence of a solvent.

The present invention provides a palladium(II) complex of formula (1). ##STR00001## R.sub.12, m, and X are described in the specification. The invention also provides a process for the preparation of the complex, and its use in carbon-carbon and carbon-heteroatom coupling reactions.

Platinum, palladium, and gold complexes suitable for use as phosphorescent emitters or as delayed fluorescent and phosphorescent emitters having the structure of Formula VIII. ##STR00001##

A compound comprising a first ligand L.sub.A of Formula I or Formula II:

##STR00001## wherein A.sup.1 and A.sup.2 are each independently C or Si; wherein each R.sup.A, and R.sup.B independently represents mono to the maximum allowable substitution, or no substitution; wherein each X.sup.1, X.sup.2, and X.sup.3 is independently C or N; wherein each R, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.A is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, boryl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; wherein L.sub.A is complexed to a metal M; wherein M is optionally coordinated to one or more other ligands; wherein the ligand L.sub.A is optionally linked with the one or more other ligands to form a tridentate, tetradentate, pentadentate, or hexadentate ligand; and wherein any two substituents are optionally joined or fused together to form a ring.

The present invention discloses nitrile ligated transition metal-phosphinobenzene-sulfonate complex of formula (I) as catalyst for insertion-copolymerization of mono and bis functionalized vinyl monomers with ethylene or other olefins. In particular, the present invention discloses nitrile ligated metal-phosphinobenzene-sulfonate complex of formula (I) as catalyst for insertion-copolymerization of mono and bis functionalized vinyl monomers with ethylene and or other olefins and to the process for preparation thereof. The invention further discloses a process for the insertion-(co)polymerization of mono and bis functionalized vinyl monomers with olefms catalyzed by the catalyst of formula (I).

##STR00001##

In one embodiment, the application discloses ligands, such as a ligand from a dihydrobenzo[1,3] oxaphosphole scaffold, and palladium complexes comprising the ligands and methods for performing cross coupling reactions and asymmetric cross coupling reactions with high selectivity and efficiency.

A light emitting element that includes a first electrode, a second, and an emission layer between the first electrode and the second electrode and including an organometallic compound represented by Formula 1 is provided. The light emitting element has a high emission efficiency, high color purity properties and long-life characteristics.

##STR00001##

The present invention includes novel heterocyclic materials for use as blue phosphorescent materials in OLED devices. The materials are based on carbene and heterocyclic 5-membered ring linked ligands, which may be complexed to a transition metal via a metal-carbon (carbene) bond and a metal-nitrogen covalent bond. In one aspect, the present invention provides compounds comprising a ligand L.sub.A having the structure of Formula I: ##STR00001##

Complexes and devices, such as organic light emitting devices and full color displays, including a compound of the formula wherein: M is Pd.sup.2+, Ir.sup.+, Rh.sup.+, or Au.sup.3+; each of V.sup.1, V.sup.2, V.sup.3, and V.sup.4 is coordinated to M and is independently N, C, P, B, or Si; each of L.sup.1, L.sup.2, L.sup.3, and L.sup.4 is independently a substituted or unsubstituted aryl, cycloalkyl, cycloalkenyl, heterocyclyl, heteroaryl, carbene, or N-heterocyclic carbene; and Z is O, S, NR, CR.sub.2, SiR.sub.2, BR, PR, where each R is independently substituted or unsubstituted C1-C4 alkyl or substituted or unsubstituted aryl.

The invention provides compounds of general structure I: (Ar.sup.1—Ar.sup.2—Ar.sup.3-E-P(=D)R.sub.2-).sub.nM.sub.mX.sub.nL.sub.n″. In this structure: •Ar.sup.1, Ar.sup.2 and Ar.sup.3 are aromatic groups wherein: —Ar.sup.1 and Ar.sup.3 are in a 1,3 relationship on Ar.sup.2, —each of Ar.sup.1, Ar.sup.2 and Ar.sup.3 optionally comprises one or more ring substituents of formula YR′.sub.r wherein each Y independently is absent or is O, S, B, N or Si and each R′ is independently H, halogen, alkyl, cycloalkyl, aryl or heteroaryl and r is 1, 2 or 3, where r is 1 if Y is absent or is O or S, 2 if Y is B or N and 3 if Y is Si, —Ar.sup.1, Ar.sup.2 and Ar.sup.3 are each independently carbocyclic or heterocyclic and each is independently monocyclic, bicyclic or polycyclic and each ring of each of Ar.sup.1, Ar.sup.2 and Ar.sup.3 independently has 5, 6 or 7 ring atoms; •E is absent or is selected from the group consisting of O, S, NR″, SiR″.sub.2, AsR″.sub.2 and CR″.sub.2; •M is a complexing metal; •X is selected from the group consisting of H, F, Br, CI, I, OTf, dba (dibenzylidene acetone), OC(═O)CF.sub.3 and OAc; •L is selected from the group consisting of PR″.sub.2, NR″.sub.2, OR″, SR″, SiR″.sub.3, AsR″.sub.3, alkene, alkyne, aryl and heteroaryl, each of said alkene, alkyne, aryl and heteroaryl being optionally substituted, for example with one or more halogens and/or with one or more R groups as defined herein; •each R is independently alkyl, cycloalkyl, heterocyclyl, heterocycloalkyl, aryl or -, heteroaryl; •D is absent or is ═S or —O or —Z-linker-Z—, where each Z independently is O or NH or N-alkyl and linker is an alkyl chain of 2-5 carbon atoms in length; •each R″ is independently H, alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl, each other than H being optionally substituted, or R″.sub.2 is —Z-linker-Z— as defined above; and •m is 0 or 1 or 2; wherein if m is 0, n is 1, n′ and n″ are 0 and -- is absent; and if m is 1 or 2, n is 1 or 2 and n′ and n″ are integers such that the coordination sphere of M is filled, and D is absent.