Embodiments of the present invention relate to an organic electronic device capable of ensuring high luminous efficiency, low driving voltage and high heat resistance, and improving color purity or lifespan.

The present invention discloses a Ziegler-Natta catalyst system for olefin polymerization, comprising at least one compound represented by formula (I) as (i) an internal electron donor, (ii) an external electron donor, or (iii) the both, wherein M.sub.1, M.sub.2, M.sub.3, M.sub.4, M.sub.5, M.sub.6, M.sub.1′, M.sub.2′, M.sub.3′, M.sub.4′, M.sub.5′ and M.sub.6′ are each independently selected from the group consisting of hydrogen, hydroxy, amino, aldehyde group, carboxy, acyl, halogen atoms, —R.sub.1 and —OR.sub.2, wherein R.sub.1 and R.sub.2 are each independently a C.sub.1-C.sub.10 hydrocarbyl, which is unsubstituted or substituted by a substituent selected from the group consisting of hydroxy, amino, aldehyde group, carboxy, acyl, halogen atoms, C.sub.1-C.sub.10 alkoxy and heteroatoms; and wherein, when among M.sub.1-M.sub.6 and M.sub.1′-M.sub.6′, any two adjacent groups on the same phenyl ring are each independently selected from the group consisting of R.sub.1 and —OR.sub.2, the two adjacent groups may optionally be linked to form a ring, with a proviso that M.sub.1, M.sub.2, M.sub.3, M.sub.4, M.sub.5, M.sub.6, M.sub.1′, M.sub.2′, M.sub.3′, M.sub.4′, M.sub.5′ and M.sub.6′ are not simultaneously hydrogen. ##STR00001##

Provided herein is 3,3,3′,3′-tetramethyl-1,1′-spirobiindane-7,7′-diol, which is a compound represented by formula I, or an enantiomer or a raceme thereof. The 3,3,3′,3′-tetramethyl-1,1′-spirobiindane-7,7′-diol is prepared with a 3,3,3′,3′-tetramethyl-1,1′-spirobiindane-7,7′-dicarbaldehyde derivative as a starting material through a Baeyer-Villiger oxidation rearrangement reaction and an alkaline hydrolysis reaction. The 3,3,3′,3′-tetramethyl-1,1′-spirobiindane-7,7′-diol comprises two gem-dimethyl groups and is a key intermediate for preparing corresponding 3,3,3′,3′-tetramethyl-1,1′-spirobiindane-based monophosphine ligands, such as phosphonite ligands, phosphite ligands, phosphoramidite ester ligands, phosphoric acid and phsophonamidate. The 3,3,3′,3′-tetramethyl-1,1′-spirobiindane-7,7′-diol skeleton provided herein could be used in chemical industry and has economic practicality and industrial application prospects.

##STR00001##

Provided are an organic electronic element and an electronic device therefor, the organic electronic element having a mixture of a compound according to the present invention used as material for an organic layer thereof, thereby enabling the achievement of high light-emitting efficiency and low driving voltage of the organic electronic element, and enabling the life of the element to be greatly extended.

The present application relates to fluoranthenylamine compounds of a formula (I). These compounds are suitable for use in electronic devices, The present application further relates to processes for preparing the compounds mentioned, and to electronic devices comprising the compounds mentioned.

The present disclosure provides certain tetrahydro-1H-cyclopenta[cd]indene compounds that are Hypoxia Inducible Factor 2α (HIF-2α) inhibitors and are therefore useful for the treatment of diseases treatable by inhibition of HIF-2α. Also provided are pharmaceutical compositions containing such compounds and processes for preparing such compounds.

The present invention relates to a compound of Formula (I): an organic semiconducting layer comprising the same, an organic electronic device comprising the organic semiconducting layer and a display device or a lighting device comprising the organic electronic device.

Gas separation membranes are provided and more particularly, a series of addition-type and ROMP type polynorbornenes with substituents derived from Mizoroki-Heck reactions are provided and have particular utility as gas separation membranes for natural gas upgrading.

The present disclosure relates to an organic electroluminescent compound represented by formula 1 and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound of the present disclosure, an organic electroluminescent device having improved driving voltage, luminous efficiency, and/or lifespan characteristics can be provided.

The present disclosure relates to an organic light-emitting diode and, more particularly, to an organic-light-emitting diode comprising: a first electrode; a second electrode facing the first electrode; and a light-emitting layer intercalated between the first electrode and the second electrode, wherein the light-emitting layer comprises at least one of the amine compounds represented by the following Chemical Formula A and at least one of the anthracene compounds represented by the following Chemical Formula B or C. The structures of Chemical Formulas A to C are the same as in the specification.