Chūō-ku, Japan
Chūō-ku, Japan

Time filter

Source Type

Patent
Kuraray Co. and Hokko Chemical Industry Co. | Date: 2016-02-03

Provided are a water-soluble triarylphosphine for a palladium catalyst, which has high selectivity in a telomerization reaction and can be recovered with efficiency, an ammonium salt thereof, and a method for efficiently producing the same. Specifically, provided are bis(6-methyl-3-sulphophenyl)phenylphosphine; a bis(6-methyl-3-sulphonatophenyl)phenylphosphine diammonium salt obtained by reacting the phosphine with a tertiary amine having a total of 3 to 27 carbon atoms in groups bonded to one nitrogen atom; and a method for producing the same.


Patent
Hokko Chemical Industry Co. | Date: 2014-03-25

It is intended to provide a novel NAD^(+)-independent myo-inositol 2-dehydrogenase which converts myo-inositol into scyllo-inosose in the absence of NAD^(+); a novel enzyme scyllo-inositol dehydrogenase which stereospecifically reduces scyllo-inosose into scyllo-inositol in the presence of NADH or NADPH; and a novel microorganism which belongs to the genus Acetobacter or Burkholderia and can convert myo-inositol into scyllo-inositol. By using these enzymes or the microorganism, scyllo-inositol is produced. Furthermore, scyllo-inositol is purified by adding boric acid and a metal salt to a liquid mixture containing scyllo-inositol and a neutral saccharide other than scyllo-inositol to form a scyllo-inositol/boric acid complex, separating the complex from the liquid mixture, dissolving the thus separated complex in an acid to give an acidic solution or an acidic suspension and then purifying scyllo-inositol from the acidic solution or the acidic suspension.


Patent
Hokko Chemical Industry Co. and Daihatsu Motor Co. | Date: 2012-05-09

In Suzuki Cross-Couplings, a palladium-containing perovskite-type composite oxide represented by the following general formula (1) is used as a catalyst for synthesis reaction:Ln_(2)M_(y)Cu_(1-x-y)Pd_(x)O_(4)(1)wherein Ln represents elements composed of at least one essential element selected from La, Pr, Nd, Sm, Eu, and Gd and at least one optional element selected from Y, Ce, Yb, Ca, Sr, and Ba; M represents at least one element selected from Cr, Mn, Fe, Co, Ni, and A1; x, indicating an atomic proportion, is 0.001 x 0.4; y, indicating an atomic proportion, is 0 y 0.5; and indicates an oxygen excess amount or an oxygen deficiency amount.


Patent
Kuraray Co. and Hokko Chemical Industry Co. | Date: 2016-02-03

Provided are a water-soluble triarylphosphine for a palladium catalyst, which has high selectivity in a telomerization reaction and is easily recovered with efficiency, an ammonium salt thereof, and a method for efficiently producing the same. Specifically, provided are bis(6-methyl-3-sulphophenyl)(2-methylphenyl)phosphine; a bis(6-methyl-3-sulphonatophenyl)(2-methylphenyl)phosphine diammonium salt obtained by reacting the phosphine with a tertiary amine having a total of 3 to 27 carbon atoms in groups bonded to one nitrogen atom; and a method for producing the same.


Patent
Kuraray Co. and Hokko Chemical Industry Co. | Date: 2014-03-26

Provided are a water-soluble triarylphosphine for a palladium catalyst, which has high selectivity in a telomerization reaction and can be recovered with efficiency, an ammonium salt thereof, and a method for efficiently producing the same. Specifically, provided are bis(6-methyl-3-sulphophenyl)phenylphosphine; a bis(6-methyl-3-sulphonatophenyl)phenylphosphine diammonium salt obtained by reacting the phosphine with a tertiary amine having a total of 3 to 27 carbon atoms in groups bonded to one nitrogen atom; and a method for producing the same.


Patent
Kuraray Co. and Hokko Chemical Industry Co. | Date: 2014-03-26

Provided are a water-soluble triarylphosphine for a palladium catalyst, which has high selectivity in a telomerization reaction and is easily recovered with efficiency, an ammonium salt thereof, and a method for efficiently producing the same. Specifically, provided are bis(6-methyl-3-sulphophenyl)(2-methylphenyl)phosphine; a bis(6-methyl-3-sulphonatophenyl)(2-methylphenyl)phosphine diammonium salt obtained by reacting the phosphine with a tertiary amine having a total of 3 to 27 carbon atoms in groups bonded to one nitrogen atom; and a method for producing the same.


Patent
Hokko Chemical Industry Co. | Date: 2013-03-08

It is intended to provide a novel NAD^(+)-independent myo-inositol 2-dehydrogenase which converts myo-inositol into scyllo-inosose in the absence of NAD^(+); a novel enzyme scyllo-inositol dehydrogenase which stereospecifically reduces scyllo-inosose into scyllo-inositol in the presence of NADH or NADPH; and a novel microorganism which belongs to the genus Acetobacter or Burkholderia and can convert myo-inositol into scyllo-inositol. By using these enzymes or the microorganism, scyllo-inositol is produced. Furthermore, scyllo-inositol is purified by adding boric acid and a metal salt to a liquid mixture containing scyllo-inositol and a neutral saccharide other than scyllo-inositol to form a scyllo-inositol/boric acid complex, separating the complex from the liquid mixture, dissolving the thus separated complex in an acid to give an acidic solution or an acidic suspension and then purifying scyllo-inositol from the acidic solution or the acidic suspension.


Patent
Hokko Chemical Industry Co. | Date: 2014-01-23

The object of the present invention is to provide a new organic phosphorus ligand that can efficiently promote cross-coupling reaction to obtain the target substance at high yield, as well as a method of manufacturing such ligand whose steric characteristics and electronic characteristics can be fine-tuned and which can be used to cause cross-coupling reaction at high yield. As a means for achieving the aforementioned object, a phosphine compound expressed by General Formula (1) below is provided. (In the formula, R^(1 )and R^(2 )are each independently a secondary alkyl group, tertiary alkyl group, or cycloalkyl group, while R^(3 )and R^(4 )are each independently a hydrogen, aliphatic group, heteroaliphatic group, aromatic group, alicyclic group, or heterocyclic group. Note that R^(3 )and R^(4 )have no phosphorus atom and that R^(3 )and R^(4 )are not both hydrogen at the same time).


Patent
Hokko Chemical Industry Co. | Date: 2015-12-02

The object of the present invention is to provide a new organic phosphorus ligand that can efficiently promote cross-coupling reaction to obtain the target substance at high yield, as well as a method of manufacturing such ligand whose steric characteristics and electronic characteristics can be fine-tuned and which can be used to cause cross-coupling reaction at high yield. As a means for achieving the aforementioned object, a phosphine compound expressed by General Formula (1) below is provided.^(1) and R^(2) are each independently a secondary alkyl group, tertiary alkyl group, or cycloalkyl group, while R^(3) and R^(4) are each independently a hydrogen, aliphatic group, heteroaliphatic group, aromatic group, alicyclic group, or heterocyclic group. Note that R^(3) and R^(4) have no phosphorus atom and that R^(3) and R^(4) are not both hydrogen at the same time).


Patent
Hokko Chemical Industry Co., Japan National Institute of Advanced Industrial Science and Technology | Date: 2012-10-24

A method of producing a multi-petaled cyclamen plant having an increased number of petals, including at least inhibiting the function of a transcription factor involved in morphogenesis of a floral organ of cyclamen.

Loading Hokko Chemical Industry Co. collaborators
Loading Hokko Chemical Industry Co. collaborators