Patents by Inventor Naoto Konya
Naoto Konya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20040204612Abstract: A disulfone compound represented by the general formula (3): 1Type: ApplicationFiled: March 2, 2004Publication date: October 14, 2004Inventors: Shinzo Seko, Naoto Konya, Toshiya Takahashi
-
Patent number: 6784321Abstract: There are disclosed a disulfone compound of formula (1): wherein Ar denotes an aryl group that may have a substituent, R1 denotes a hydrogen atom or a protective group of a hydroxyl group and the wavy line means that the disulfone compound is an E or Z geometrical isomer or a mixture thereof, a method for producing the same, intermediate compounds therefore and a process for producing retinol through the disulfone compound.Type: GrantFiled: October 20, 2003Date of Patent: August 31, 2004Assignee: Sumitomo Chemical Company, LimitedInventors: Toshiya Takahashi, Shinzo Seko, Kazutaka Kimura, Noriyuki Doi, Naoto Konya
-
Publication number: 20040082814Abstract: There are disclosed a disulfone compound of formula (1): 1Type: ApplicationFiled: October 20, 2003Publication date: April 29, 2004Applicant: Sumitomo Chemical Company, LimitedInventors: Toshiya Takahashi, Shinzo Seko, Kazutaka Kimura, Noriyuki Doi, Naoto Konya
-
Patent number: 6660888Abstract: There are disclosed a disulfone compound of formula (1): wherein Ar denotes an aryl group that may have a substituent, R1 denotes a hydrogen atom or a protective group of a hydroxyl group and the wavy line means that the disulfone compound is an E or Z geometrical isomer or a mixture thereof, a method for producing the same, intermediate compounds therefore and a process for producing retinol through the disulfone compound.Type: GrantFiled: October 18, 2001Date of Patent: December 9, 2003Assignee: Sumitomo Chemical Company, LimitedInventors: Toshiya Takahashi, Shinzo Seko, Kazutaka Kimura, Noriyuki Doi, Naoto Konya
-
Publication number: 20030120088Abstract: There are disclosed an optically active azetidincarboxamide-coordinated transition metal complex of formula (1): 1Type: ApplicationFiled: December 11, 2002Publication date: June 26, 2003Inventors: Taichi Senda, Kazunori Iwakura, Naoto Konya
-
Patent number: 6444857Abstract: There are disclosed an alcohol derivative of formula (1): wherein Ar is an optionally substituted aryl group and R is a straight or branched C1-C3 lower alkyl group, and the wavy line depicted by indicates a single bond and stereochemistry relating to a double bond bound therewith is E or Z or a mixture thereof, and a process for producing the same and a process for producing Vitamin A aldehyde using the same.Type: GrantFiled: October 10, 2000Date of Patent: September 3, 2002Assignee: Sumitomo Chemical Company, LimitedInventors: Shinzo Seko, Naoto Konya, Toshiya Takahashi
-
Publication number: 20020058844Abstract: There are disclosed a disulfone compound of formula (1): 1Type: ApplicationFiled: October 18, 2001Publication date: May 16, 2002Inventors: Toshiya Takahashi, Shinzo Seko, Kazutaka Kimura, Noriyuki Doi, Naoto Konya
-
Patent number: 6355841Abstract: There are disclosed a process for producing a sulfon derivative of formula (1): wherein Ar represents an aryl group which may be substituted, R represents a lower alkyl group and the wavy line depicted by indicates a single bond and stereochemistry relating to a double bond bound therewith is E or Z or a mixture thereof, which process is characterized by reacting an aldehyde derivative of formula (2): with phosphonium salt of formula (3): in the presence of a base; a sulfone derivative of formula (1) and a process for producing a &bgr;-carotene using sulfone derivative of formula (1).Type: GrantFiled: October 10, 2000Date of Patent: March 12, 2002Assignee: Sumitomo Chemical Company, LimitedInventors: Naoto Konya, Shinzo Seko
-
Patent number: 6331652Abstract: There are disclosed a sulfonaldehyde derivative of formula (2): a phosphonium salt of formula (3): processes for producing the same and a sulfone derivative of formula (4): a process for producing the same and a process for producing lycopene therefrom.Type: GrantFiled: July 24, 2000Date of Patent: December 18, 2001Assignee: Sumitomo Chemical Company, LimitedInventors: Naoto Konya, Shinzo Seko
-
Patent number: 6288283Abstract: There are disclosed: a hydroxyaldehyde derivative of formula (1): wherein the wavy line depicted by indicates a single bond and the compound having a double bond to which said single bond is attached represents E or Z isomer or a mixture thereof, a methoxy alcohol derivative of formula (2): wherein the wavy line depicted by indicates a single bond and the compound having a double bond to which said single bond is attached represents E or Z isomer or a mixture thereof, processes for producing the same, and a process for producing a retinal using the same.Type: GrantFiled: June 1, 2000Date of Patent: September 11, 2001Assignee: Sumitomo Chemical Company, Ltd.Inventors: Shinzo Seko, Naoto Konya, Toshiya Takahashi
-
Patent number: 6211411Abstract: There are disclosed sulfone aldehyde derivatives of the Formula (1): wherein Ar is an optionally substituted aryl group, a process for producing retinal by using the same, and an intermediate for producing the sulfone aldehyde derivative.Type: GrantFiled: June 9, 1999Date of Patent: April 3, 2001Assignee: Sumitomo Chemical Company, LimitedInventors: Toshiya Takahashi, Naoto Konya, Shinzo Seko
-
Patent number: 6160181Abstract: A tetraene derivative of the formula (1): ##STR1## wherein Ar represents an aryl group which may be optionally substituted with at least one substituent, and R.sup.1 and R.sup.2 are identical or different and represent a hydrogen atom, a lower alkyl group or a protective group of a hydroxyl group; synthesis methods therefor and synthesis methods using the same.Type: GrantFiled: August 25, 1999Date of Patent: December 12, 2000Assignee: Sumitomo Chemical Company, LimitedInventors: Shinzo Seko, Naoto Konya, Toshiya Takahashi, Atsushi Furutani
-
Patent number: 6149837Abstract: Provide is a novel phenylacetylene compound (1) which has a large anisotropy of refractive index, tends to be mixed with other liquid crystals, and is more advantageous in stability to light, a liquid crystal composition and a liquid crystal element usable for an optical shutter, a display element, ##STR1## A.sup.1 to A.sup.12 each independently represent a hydrogen atom, a fluorine atom, or an alkyl group having 1 to 10 carbon atoms, and at least one is an alkyl group.Type: GrantFiled: February 25, 1999Date of Patent: November 21, 2000Assignees: Sumitomo Chemical Company, Limited, Agency of Industrial Science and Technology, New Energy and Industrial Technology Development OrganizationInventors: Chizu Sekine, Koichi Fujisawa, Naoto Konya, Masayoshi Minai
-
Patent number: 6025531Abstract: A process for preparing an optically active alcohol by reacting a prochiral ketone corresponding to the optically active alcohol and an acid with a mixture of (1) a boron-containing compound selected from the group consisting of i) a borane compound which is obtained from an optically active .beta.-aminoalcohol and a boron hydride; or obtained from the optically active .beta.-aminoalcohol, a metal borohydride and an acid and ii) an optically active oxazaborolidine and (2) a metal borohydride; and a process for preparing an optically active amine by reacting an oxime derivative and an acid with a mixture of (1) a boron-containing compound selected from the group consisting of i) a borane compound which is obtained from an optically active .beta.-aminoalcohol and a boron hydride, or obtained from said optically active .beta.-aminoalcohol, a metal borohydride and an acid and ii) an optically active oxazaborolidine, and (2) a metal borohydride.Type: GrantFiled: June 3, 1998Date of Patent: February 15, 2000Assignee: Sumitomo Chemical Company, LimitedInventors: Yukio Yoneyoshi, Naoto Konya, Gohfu Suzukamo
-
Patent number: 5801280Abstract: A process for preparing an optically active alcohol by reacting a prochiral ketone corresponding to the optically active alcohol and an acid with a mixture of (1) a boron-containing compound selected from the group consisting of i) a borane compound which is obtained from an optically active .beta.-aminoalcohol and a boron hydride; or obtained from the optically active .beta.-aminoalcohol, a metal borohydride and an acid and ii) an optically active oxazaborolidine and (2) a metal borohydride; and a process for preparing an optically active amine by reacting an oxime derivative and an acid with a mixture of (1) a boron-containing compound selected from the group consisting of i) a borane compound which is obtained from an optically active .beta.-aminoalcohol and a boron hydride, or obtained from said optically active .beta.-aminoalcohol, a metal borohydride and an acid and ii) an optically active oxazaborolidine, and (2) a metal borohydride.Type: GrantFiled: April 5, 1996Date of Patent: September 1, 1998Assignee: Sumitomo Chemical Company, LimitedInventors: Yukio Yoneyoshi, Naoto Konya, Gohfu Suzukamo, Masashi Kamitamari, Takashi Miyawaki
-
Patent number: 5200561Abstract: Disclosed is a process for producing an optically active amine represented by the formula (IV) ##STR1## wherein R.sub.7 and R.sub.8 each denote an alkyl group, aryl group or aralkyl group, providing that they do not denote the same group at the same time, and * indicates an asymmetric carbon atom, which comprises reacting an asymmetric reducing agent obtained from (1) an optically active amine derivative represented by the formula (I) ##STR2## wherein R.sub.1 denotes an alkyl group, aryl group or aralkyl group; R.sub.2 denotes a hydrogen atom, alkyl group or aralkyl group; R.sub.3 denotes an aryl group or a substituent represented by the formula (II) ##STR3## wherein R.sub.4 and R.sub.5 each denote a hydrogen atom, aryl group or aralkyl group, and * is as defined above, (2) a metal borohydride and (3) sulfuric acid, with either the syn-isomer or the anti-isomer of an oxime derivative represented by the formula (III) or with a mixture rich in either one of the two isomers ##STR4## wherein R.sub.Type: GrantFiled: October 7, 1991Date of Patent: April 6, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Naoto Konya, Yukio Yoneyoshi, Yoji Sakito, Shinji Nishii, Gohfu Suzukamo, Hiroko Sakane
-
Patent number: 5144039Abstract: The process for producing an optically active alcohol of the present invention comprises allowing(A) an optically active amino alcohol represented by the general formula (I) ##STR1## (R.sup.1 is an aryl group, R.sup.2 is a lower alkyl group, R.sup.3 is a hydrogen atom or a lower alkyl group, and the carbon atoms having a mark * are each an asymmetric carbon atom) and an acid, or a salt of the optically active amino alcohol (I) and an acid,(B) a metal borohydride, and(C) at least one member selected from the group consisting of water, sulfides, cyclic ethers, ethers of mono alcohol to react witha prochiral ketone represented by the general formula (II) ##STR2## [R.sup.4 and R.sup.5 are different and each a lower alkyl group, an aryl group, an aralkyl group or a 2-substituted-1-triazoleethylene group represented by the general formula (III) ##STR3## (R.sup.6 is a halogen- or haloalkyl-substituted or unsubstituted phenyl group or a cycloalkyl group)].Type: GrantFiled: January 29, 1990Date of Patent: September 1, 1992Assignee: Sumitomo Electric Company, LimitedInventors: Yukio Yoneyoshi, Gohfu Suzukamo, Naoto Konya, Takaharu Ikeda