Patents by Inventor Kieko Sano

Kieko Sano 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).

  • Malonic acid monomethyl derivatives and production process thereof
    Patent number: 7208621
    Abstract: A novel monomethyl malonate derivative is represented by following Formula (I): wherein X is a halogen atom; and Me is methyl group. This compound can be prepared by the steps of (A) reacting a benzyl halide derivative represented by following Formula (II): wherein X and Y may be the same as or different from each other and are each a halogen atom, with dimethyl malonate in the presence of a base to yield a dimethyl malonate derivative represented by following Formula (III): wherein X and Me have the same meanings as defined above; and (B) hydrolyzing the dimethyl malonate derivative of Formula (III). The compound is useful in the production of an indanonecarboxylic acid ester having a halogen atom on the indanone ring.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: April 24, 2007
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Satoru Nose, Kieko Sano, Takeshi Hamatani
  • Novel malonic acid monomethyl derivatives and production process thereof
    Publication number: 20060252957
    Abstract: A novel monomethyl malonate derivative is represented by following Formula (I): wherein X is a halogen atom; and Me is methyl group. This compound can be prepared by the steps of (A) reacting a benzyl halide derivative represented by following Formula (II): wherein X and Y may be the same as or different from each other and are each a halogen atom, with dimethyl malonate in the presence of a base to yield a dimethyl malonate derivative represented by following Formula (III): wherein X and Me have the same meanings as defined above; and (B) hydrolyzing the dimethyl malonate derivative of Formula (III). The compound is useful in the production of an indanonecarboxylic acid ester having a halogen atom on the indanone ring.
    Type: Application
    Filed: July 14, 2006
    Publication date: November 9, 2006
    Inventors: Satoru Nose, Kieko Sano, Takeshi Hamatani
  • Malonic acid monomethyl derivatives and production process thereof
    Patent number: 7109369
    Abstract: A novel monomethyl malonate derivative is represented by following Formula (I): wherein X is a halogen atom; and Me is methyl group. This compound can be prepared by the steps of (A) reacting a benzyl halide derivative represented by following Formula (II): wherein X and Y may be the same as or different from each other and are each a halogen atom, with dimethyl malonate in the presence of a base to yield a dimethyl malonate derivative represented by following Formula (III): wherein X and Me have the same meanings as defined above; and (B) hydrolyzing the dimethyl malonate derivative of Formula (III). The compound is useful in the production of an indanonecarboxylic acid ester having a halogen atom on the indanone ring.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: September 19, 2006
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Satoru Nose, Kieko Sano, Takeshi Hamatani
  • Acid halide derivatives, their production, and production of indanonecarboxylic acid esters using the same
    Patent number: 6916946
    Abstract: Disclosed is a novel acid halide derivative represented by Formula (I): wherein X and Y may be the same or different and are each a halogen atom; and R is a lower alkyl group. By cyclizing the acid halide derivative of Formula (I) in the presence of a catalyst, an indanonecarboxylic acid ester represented by Formula (VI): wherein X and R are as defined above, is produced. Such indanonecarboxylic acid esters are useful as intermediates for insecticides.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: July 12, 2005
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Satoru Nose, Kieko Sano, Syu-ichi Yamagiwa, Takeshi Hamatani
  • Novel malonic acid monomethyl derivatives and production process thereof
    Publication number: 20050124825
    Abstract: A novel monomethyl malonate derivative is represented by following Formula (I): wherein X is a halogen atom; and Me is methyl group. This compound can be prepared by the steps of (A) reacting a benzyl halide derivative represented by following Formula (II): wherein X and Y may be the same as or different from each other and are each a halogen atom, with dimethyl malonate in the presence of a base to yield a dimethyl malonate derivative represented by following Formula (III): wherein X and Me have the same meanings as defined above; and (B) hydrolyzing the dimethyl malonate derivative of Formula (III). The compound is useful in the production of an indanonecarboxylic acid ester having a halogen atom on the indanone ring.
    Type: Application
    Filed: November 1, 2004
    Publication date: June 9, 2005
    Inventors: Satoru Nose, Kieko Sano, Takeshi Hamatani
  • Novel acid halide derivatives, their production, and production of indanonecarboxylic acid esters using the same
    Publication number: 20050043568
    Abstract: Disclosed is a novel acid halide derivative represented by Formula (I): wherein X and Y may be the same or different and are each a halogen atom; and R is a lower alkyl group. By cyclizing the acid halide derivative of Formula (I) in the presence of a catalyst, an indanonecarboxylic acid ester represented by Formula (VI): wherein X and R are as defined above, is produced. Such indanonecarboxylic acid esters are useful as intermediates for insecticides.
    Type: Application
    Filed: March 11, 2004
    Publication date: February 24, 2005
    Inventors: Satoru Nose, Kieko Sano, Syu-ichi Yamagiwa, Takeshi Hamatani