The present invention relates to a compound of formula (I) and an organic electronic device comprising a semiconductor layer which comprises a compound of formula (I).

The present invention relates to an organic electronic device comprising a compound of formula (I) and a display device comprising the organic electronic device. The invention further relates to novel compounds of formula (I) which can be of use in organic electronic devices.

The present invention provides high purity 2-naphthylacetonitrile with fewer impurities that is useful as a starting material or intermediate for the synthesis of various pharmaceutical products, agricultural chemicals, and chemical products, and a production method thereof. A high purity 2-naphthylacetonitrile having an HPLC purity of 2-naphthylacetonitrile of not less than 95 area %, and containing naphthalene compounds represented by the formulas (a)-(j) at a content of a predetermined area % or below. A method for producing high purity 2-naphthylacetonitrile, including the following step 1 and step 2: step 1: a step of subjecting 2′-acetonaphthone to a Willgerodt reaction in the presence of an additive where necessary, and hydrolyzing the obtained amide compound to give 2-naphthylacetic acid; step 2: a step of reacting the 2-naphthylacetic acid obtained in step 1, a halogenating agent and sulfamide in the presence of a catalyst as necessary in an organic solvent to give 2-naphthylacetonitrile.

The present invention provides high purity 2-naphthylacetonitrile with fewer impurities that is useful as a starting material or intermediate for the synthesis of various pharmaceutical products, agricultural chemicals, and chemical products, and a production method thereof. A high purity 2-naphthylacetonitrile having an HPLC purity of 2-naphthylacetonitrile of not less than 95 area %, and containing naphthalene compounds represented by the formulas (a)-(j) at a content of a predetermined area % or below. A method for producing high purity 2-naphthylacetonitrile, including the following step 1 and step 2: step 1: a step of subjecting 2′-acetonaphthone to a Willgerodt reaction in the presence of an additive where necessary, and hydrolyzing the obtained amide compound to give 2-naphthylacetic acid; step 2: a step of reacting the 2-naphthylacetic acid obtained in step 1, a halogenating agent and sulfamide in the presence of a catalyst as necessary in an organic solvent to give 2-naphthylacetonitrile.

Disclosed herein is a method for preparing a 2-arylmalonic acid derivative. In this method, a cyclohexadiene compound is used as a raw material, and sequentially undergoes an isomerization reaction, a halogenation reaction in the presence of a halogenating agent and a dehydrohalogenation-aromatization reaction to obtain a 2-arylmalonic acid derivative (3). An intermediate for preparing the 2-arylmalonic acid derivative (3) and use of the intermediate are also disclosed.

##STR00001##

Disclosed herein is a method for preparing a 2-arylmalonic acid derivative. In this method, a cyclohexadiene compound is used as a raw material, and sequentially undergoes an isomerization reaction, a halogenation reaction in the presence of a halogenating agent and a dehydrohalogenation-aromatization reaction to obtain a 2-arylmalonic acid derivative (3). An intermediate for preparing the 2-arylmalonic acid derivative (3) and use of the intermediate are also disclosed.

##STR00001##

Process for the preparation of a compound of Formula (I): ##STR00001## the process comprising the reaction of a compound of Formula (II) with malononitrile in the presence of a base and a palladium catalyst, ##STR00002## wherein X, Y and Z, independently of each other, represent fluoro, chloro or C.sub.1-4alkyl; and L is a leaving group; with the proviso that 1 or 2 of X and Y are, independently of each other, fluoro or chloro.

Process for the preparation of a compound of Formula (I): ##STR00001## the process comprising the reaction of a compound of Formula (II) with malononitrile in the presence of a base and a palladium catalyst, ##STR00002## wherein X, Y and Z, independently of each other, represent fluoro, chloro or C.sub.1-4alkyl; and L is a leaving group; with the proviso that 1 or 2 of X and Y are, independently of each other, fluoro or chloro.

Process for the preparation of a compound of Formula (I): ##STR00001## the process comprising the reaction of a compound of Formula (II) with malononitrile in the presence of a base and a palladium catalyst, ##STR00002## wherein X, Y and Z, independently of each other, represent fluoro, chloro or C.sub.1-4alkyl; and L is a leaving group; with the proviso that 1 or 2 of X and Y are, independently of each other, fluoro or chloro.

2-(4-chloro-2,6-dimethyl-phenyl)propanedinitrile.