Sumitomo Chemical Company, Limited

Other

Yamasa Shoyu Kabushiki Kaisha

Hideyuki Ikehira

Takahiro Ueoka

Shuji Doi

Yasuyuki Kurita

Masayoshi Minai

Satoshi Okamoto

Ryoji Noyori

Takao Ikariya

Yoshiaki Tsubata

Isao Saito

Kunihiko Murata

Shinji Ohtomo

Takeshi Ohkuma

Akiko Nakazono

Masami Kozawa

Takaharu Ikeda

Seiichi Kai

Toru Yokozawa

Eiji Katayama

Teruo Matsuura

Sachiko Imazu

A polymeric light emitting substance having a polystyrene reduced number-average molecular weight of from 10to 10wherein this light emitting substance has in the main chain or side chain a metal complex structure showing light emission from the triplet excited state, and the substance can form a light emitting layer by industrially simple application methods such as a spin coat method, inkjet method, printing method and the like.

Polymeric light emitting substance and polymer light emitting device using the same

A polymeric light emitting substance having a polystyrene reduced number-average molecular weight of from 10to 10wherein this light emitting substance has in the main chain or side chain a metal complex structure showing light emission from the triplet excited state, and said substance can form a light emitting layer by industrially simple application methods such as a spin coat method, inkjet method, printing method and the like.

A liquid-crystalline polyester production method with a shortened reaction time and improved productivity per unit time by using an organic basic compound containing one nitrogen atom in a molecule is achieved by a liquid-crystalline polyester production method comprising carrying out acylation reaction and/or ester-exchange in the presence of an organic basic compound containing one nitrogen atom in one molecule and satisfying the following inequality (1):0&#x3c;0.4&#xd7;&#x2003;&#x2003;(1)wherein, A and B satisfy A={(Ec&#x2212;Ec)/(Ep&#x2212;Ep)}&#x2212;1 and B=(&#x3c6;f/&#x3c6;fp)&#x2212;1; Ec denotes the heat of formation of the organic basic compound; Ecdenotes the heat of formation of a compound coordinated by proton; Ep denotes the heat of formation of pyridine; and Epdenotes the heat of formation of pyridine coordinated by proton to the nitrogen atom; &#x3c6;f and &#x3c6;fp independently denote parameters relevant to the steric angles.

Liquid-crystalline polyester production method

Provided is a bis(diphenylvinyl)arene compound having a reactive functional group on phenyl group, represented by below formula (1),wherein, Ar is an arylene group and has one or more substituents; R-Reach independently represent a hydrogen atom, a halogen atom, cyano group, nitro group, etc., and at least one of R-Ris a halogen atom, etc. The arene compound has sufficient solubility in an organic solvent and excellent reactivity.

Bis (diphenylvinyl) arene compound

Provided is a process for producing a bromo-aromatic condensed ring compound which comprises reacting an aromatic condensed ring compound in which the number of carbon atom constituting the aromatic condensed ring is 15 or more with a N-bromo carboxylic acid amide in the presence of a chlorinated hydrocarbon compound and sulfuric acid to brominate said aromatic condensed ring compound.

Process for producing bromo-aromatic condensed ring compound

Alcohols are produced in a practical and advantageous method, by the hydrogenation of a carbonyl compound under mild conditions, by reacting the carbonyl compounds with hydrogen in the presence of a bipyridyl derivative, a group VIII transition metal complex, and a base, or by reducing a carbonyl compound in the presence of a bipyridyl derivative, a group VIII transition metal complex, a base, and an alcoholic solvent.

Processes for the preparation of alcohols

An improved process for preparing an optically active 4-hydroxycyclopentenone of the formula: ##STR1## wherein R is a lower alkyl, the symbol  means double bond or triple bond, and the * marked carbon is an asymmetric carbon, and the corresponding racemic 4-hydroxycyclopentenone, which are useful as an intermediate for preparing medicinal or agricultural products, particularly pharmaceutically active prostaglandins, and intermediates for preparing the optically active and/or racemic 4-hydroxycyclopentenone.

Process for preparing optically active cyclopentenones

In a method for deoxygenating the secondary and/or tertiary OH group(s) in an alcohol having such OH group(s), a characteristic feature thereof is that the alcohol having the OH group(s) is first converted into a substituted or unsubstituted benzoate derivative, and the benzoate derivative is then subjected to a photocatalytic reaction in the presence of an electron donor or to an electrode reaction in the presence of an electrolyte, whereby the desired compound in which the OH group(s) has (have) been selectively deoxygenated can be obtained in a high yield on an industrial scale.

Growing community of inventors

Mukou, Japan

Hideyuki Ikehira