Patents by Inventor Wenli Jia

Wenli Jia 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: 20230105720
    Abstract: The present disclosure relates to cannabigerol sulfonate esters and processes for their use to prepare cannabigerol (CBG) and related compounds, including cannabigerobutol (CBGB), cannabigerovarin (CBGV), and cannabigerophorbol (CBGP). In a preferred embodiment, the cannabigerol sulfonate ester is (E)-4-(3, 7-5 dimethylocta-2,6-dienyl)-3,5-bis(trimethylsilyloxy)phenylromethanesulfonate. In a preferred process, the trifluoromethansulfonate leaving group is replaced by an alkyl group. The disclosure also relates to the use of catalysts and catalytic processes for the preparation of cannabigerol and related compounds from the cannabigerol sulfonate esters.
    Type: Application
    Filed: March 29, 2021
    Publication date: April 6, 2023
    Applicant: KARE CHEMICAL TECHNOLOGIES INC.
    Inventors: Kamaluddin ABDUR-RASHID, Wenli JIA, Kareem ABDUR-RASHID
  • Publication number: 20220380333
    Abstract: The present disclosure relates to new cannabinoid derivatives and precursors and processes for their preparation. The disclosure also relates to pharmaceutical and analytical uses of the new cannabinoid derivatives.
    Type: Application
    Filed: September 3, 2020
    Publication date: December 1, 2022
    Applicant: KARE CHEMICAL TECHNOLOGIES INC.
    Inventors: Kamaluddin ABDUR-RASHID, Wenli JIA, Kareem ABDUR-RASHID
  • Publication number: 20220340514
    Abstract: The present disclosure relates to new cannabinoid derivatives and precursors and catalytic asymmetric processes for their preparation. The disclosure also relates to pharmaceutical compositions and pharmaceutical and analytical uses of the new cannabinoid derivatives. For instance, the disclosure relates to the preparation of new precursors, and the use of such precursor compounds for the preparation of isotope labelled cannabinoid products using chiral and achiral catalysts and catalytic processes. The deuterium, carbon-13 and carbon-14 containing compounds can be prepared and purified prior to transformation to the desired individual deuterated cannabinoid products.
    Type: Application
    Filed: September 9, 2020
    Publication date: October 27, 2022
    Applicant: KARE CHEMICAL TECHNOLOGIES INC.
    Inventors: Kamaluddin ABDUR-RASHID, Wenli JIA, Kareem ABDUR-RASHID
  • Publication number: 20220220089
    Abstract: The present disclosure relates to new cannabinoid sulfonate esters and processes for their use to prepare cannabinoids. The disclosure also relates to the use of catalysts and catalytic processes for the preparation of cannabinoids from the cannabinoid sulfonate esters.
    Type: Application
    Filed: May 20, 2020
    Publication date: July 14, 2022
    Inventors: Kamaluddin ABDUR-RASHID, Wenli JIA, Kareem ABDUR-RASHID
  • Patent number: 11008270
    Abstract: The present disclosure relates to a new catalytic process for the production of methanol from carbon dioxide, comprising: (1) the conversion of carbon dioxide and hydrogen to formic acid or formate salts; (2) converting the formic acid or formate salts to diformate esters of diols; (3) hydrogenating the diformate esters to methanol and diols. The diols produced from the hydrogenation reaction can be recovered and re-used to prepare the diformate esters.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: May 18, 2021
    Assignee: Kare Chemical Technologies Inc.
    Inventors: Kareem Abdur-Rashid, Wenli Jia, Kamaluddin Abdur-Rashid
  • Publication number: 20210087126
    Abstract: The present disclosure relates to a new catalytic process for the production of methanol from carbon dioxide, comprising: (1) the conversion of carbon dioxide and hydrogen to formic acid or formate salts; (2) converting the formic acid or formate salts to diformate esters of diols; (3) hydrogenating the diformate esters to methanol and diols. The diols produced from the hydrogenation reaction can be recovered and re-used to prepare the diformate esters.
    Type: Application
    Filed: April 1, 2019
    Publication date: March 25, 2021
    Inventors: Kareem Abdur-Rashid, Wenli Jia, Kamaluddin Abdur-Rashid
  • Patent number: 9115249
    Abstract: The present disclosure relates to processes and methods of generating hydrogen via the dehydrocoupling of amine boranes using ligand-stabilized homogenous metal catalysts. The amine-borane is shown by the formula (I), R1R2N—BHR3R4. A process is also shown for the preparation of a linear, branched or cyclic polymer which comprises a repeating unit of the formula (II), —[R1R2N—BR3R4]-n, by reacting HR1R2N—BHR3R4 in the presence of at least one ligand-stabilized metal catalyst.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: August 25, 2015
    Assignee: Kanata Chemical Technologies Inc.
    Inventors: Kamaluddin Abdur-Rashid, Todd Graham, Chi-Wing Tsang, Xuanhua Chen, Rongwei Guo, Wenli Jia
  • Patent number: 9062085
    Abstract: The present disclosure relates to biaryl diphosphine ligands of the formula (B), processes for the production of the ligands and the use of the ligands in metal catalysts for asymmetric synthesis. The disclosure also relates to intermediates used for the production of the biaryl diphosphine ligand.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: June 23, 2015
    Assignee: Kanata Chemical Technologies Inc.
    Inventors: Kamaluddin Abdur-Rashid, Wenli Jia, Shuiming Lu, Rongwei Guo, Xuanhua Chen, Dino Amoroso
  • Patent number: 8658825
    Abstract: The present application is directed to i) a method for synthesizing aminophosphine (P,N) and phosphine-aminophosphine (P,N,P) ligands, ii) the use of such ligands in the preparation of metal complexes as hydrogenation catalysts, and iii) aminophosphine (P,N) and phosphine-aminophosphine (P,N,P) ligands of various structures. In particular, the methods in i) involve reacting a protected tertiary amine of formula (I) with a metal phosphide of the formula Y—PR8R9 to afford an aminophosphine of formula (II), which can then be optionally further reacted with a phosphine of the formula (III) to afford the phosphine-aminophosphine of formula (IV).
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: February 25, 2014
    Assignee: Kanata Chemical Technologies Inc.
    Inventors: Kamaluddin Abdur-Rashid, Rongwei Guo, Xuanhua Chen, Wenli Jia
  • Patent number: 8518368
    Abstract: The present disclosure relates to processes and methods of generating hydrogen via the hydrolysis or solvolyis of a compound of the formula (I), R1R2HNBHR3R4, using ligand-stabilized homogeneous metal catalysts.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: August 27, 2013
    Assignee: Kanata Chemical Technologies Inc.
    Inventors: Kamaluddin Abdur-Rashid, Todd Graham, Chi-Wing Tsang, Xuanhua Chen, Rongwei Guo, Wenli Jia, Dino Amoroso, Christine Sui-Seng
  • Publication number: 20130184479
    Abstract: The present disclosure relates to biaryl diphosphine ligands of the formula (B), processes for the production of the ligands and the use of the ligands in metal catalysts for asymmetric synthesis. The disclosure also relates to intermediates used for the production of the biaryl diphosphine ligand.
    Type: Application
    Filed: September 9, 2011
    Publication date: July 18, 2013
    Applicant: KANATA CHEMICAL TECHNOLOGIES INC.
    Inventors: Kamaluddin Abdur-Rashid, Wenli Jia, Shuiming Lu, Rongwei Guo, Xuanhua Chen, Dino Amoroso
  • Publication number: 20130053566
    Abstract: Cationic palladium catalysts comprising diamino carbene ligands, wherein the catalysts are of the formula [Pd(X)q(LBX)t(DC)]r+[Ym-]p or [Pd(X)q(LB)n(LBX)t(DC)]2a+[V?]u[Z2?]y, wherein DC is a diamino carbene ligand, X is an anionic ligand, LBX is a combined anionic and neutral ligand, and Y, V, and Z are non-coordinating anions. The compounds are useful in catalytic reactions, including cross-coupling reactions and hydroamination reactions. In particular, the catalysts are used in the following reactions: Suzuki-Miyaura coupling, Kumada coupling, Negishi coupling, Sonogashira coupling, Hartwig-Buchwald amination, and Heck-Mizoroki coupling.
    Type: Application
    Filed: April 14, 2011
    Publication date: February 28, 2013
    Inventors: Kamaluddin Abdur-Rashid, Dino Amoroso, Chi-Wing Tsang, Wenli Jia
  • Patent number: 8232430
    Abstract: The present disclosure relates to a method for the stereoselective production of cis-4-tertbutylcyclohexanol comprising contacting 4-tert-butylcyclohexanone with hydrogen gas, a catalyst comprising a ruthenium-aminophosphine complex and a base, wherein the complex is of the formula RuX2(PNH2)a(P2)b (I), wherein X is anionic ligand, (PNH2) represents an aminophosphine ligand of the formula (II) R1R2P-L-NH2 and (P2) represents a diphosphine ligand of the formula (III) R3R4P-L-PR5R6.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: July 31, 2012
    Assignee: Kanata Chemical Technologies Inc.
    Inventors: Kamaluddin Abdur-Rashid, Xuanhua Chen, Rongwei Guo, Wenli Jia
  • Publication number: 20110104046
    Abstract: The present disclosure relates to processes and methods of generating hydrogen via the dehydrocoupling of amine boranes using ligand-stabilized homogenous metal catalysts. The amine-borane is shown by the formula (I), R1R2N—BHR3R4. A process is also shown for the preparation of a linear, branched or cyclic polymer which comprises a repeating unit of the formula (II), —[R1R2N—BR3R4]-n, by reacting HR1R2N—BHR3R4 in the presence of at least one ligand-stabilized metal catalyst.
    Type: Application
    Filed: May 15, 2009
    Publication date: May 5, 2011
    Inventors: Kamaluddin Abdur-Rashid, Todd Graham, Chi-Wing Tsang, Xuanhua Chen, Rongwei Guo, Wenli Jia
  • Publication number: 20110105693
    Abstract: Disclosed are cationic ruthenium arene complexes of Formula (I): [Ru(D-Z1—NHR1)(Ar)(LB)n]r+[Y?]r, wherein Ar is optionally substituted aryl, D-Z1—NHR1 is a coordinated bidentate ligand wherein D, Z1, R1 and R2 are as defined herein, and where R1 and Ar, or R2 and Ar may be linked together, n is 0 or 1, r is 1 or 2, LB is a neutral Lewis base, and Y is a non-coordinating anion. The complexes are active catalysts for reduction reactions, including the transfer-hydrogenation of carbon-oxygen (C?O) and carbon-nitrogen (C?N) double bonds.
    Type: Application
    Filed: May 1, 2009
    Publication date: May 5, 2011
    Applicant: KANATA CHEMICAL TECHNOLOGIES INC.
    Inventors: Kamaluddin Abdur-Rashid, Dino Amoroso, Christine Sui-Seng, Wenli Jia, Charles Ewart
  • Publication number: 20110070152
    Abstract: The present disclosure relates to processes and methods of generating hydrogen via the hydrolysis or solvolyis of a compound of the formula (I), R1R2HNBHR3R4, using ligand-stabilized homogeneous metal catalysts.
    Type: Application
    Filed: May 16, 2008
    Publication date: March 24, 2011
    Inventors: Kamaluddin Abdur-Rashid, Todd Graham, Chi-Wing Tsang, Xuanhua Chen, Rongwei Guo, Wenli Jia, Dino Amoroso, Christine Sui-Seng
  • Publication number: 20100311975
    Abstract: The present disclosure includes catiome complexes of iron, ruthenium, and osmium, and their use as catalysts in organic synthesis transformations including the hydrogenation of unsaturated compounds. The complexes are represented by the following formulae I, II, III, IV, and V, wherein M is Fe, Ru or Os, P is a monodentate ligand with a phosphorus donor atom, P2 is a bidentate neutral ligand with two phosphorus donor atoms, N2 is a bidentate neutral ligand with two nitrogen donor atoms, PN is a bidentate neutral ligand with phosphorus and nitrogen donor atoms, PNNP is a tetradentate neutral ligand bonded to M via two phosphorus and two nitrogen atoms, X is any anionic ligand, LB is any neutral Lewis base, Y is any non-coordinating anion, n is 0, 1, or 2, m is 1 or 2, q is 0 or 1, r is 1 or 2 and q+r=2.
    Type: Application
    Filed: October 30, 2008
    Publication date: December 9, 2010
    Inventors: Kamaluddin Abdur-Rashid, Dino Amoroso, Rongwei Guo, Xuanhua Chen, Christine Sui-Seng, Chi-Wing Tsang, Wenli Jia
  • Patent number: 7777083
    Abstract: A process for the reduction of compounds comprising one or more carbon-oxygen (C?0) double bonds, to provide the corresponding alcohol, comprising contacting the compound with hydrogen gas at a pressure greater than 3 atm and a catalyst comprising an iridium aminodiphosphine complex.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: August 17, 2010
    Assignee: Kanata Chemical Technologies Inc.
    Inventors: Kamaluddin Abdur-Rashid, Rongwei Guo, Xuanhua Chen, Wenli Jia
  • Publication number: 20100204514
    Abstract: The present application is directed to i) a method for synthesizing aminophosphine (P,N) and phosphine-aminophosphine (P,N,P) ligands, ii) the use of such ligands in the preparation of metal complexes as hydrogenation catalysts, and iii) aminophosphine (P,N) and phosphine-aminophosphine (P,N,P) ligands of various structures. In particular, the methods in i) involve reacting a protected tertiary amine of formula (I) with a metal phosphide of the formula Y—PR8R9 to afford an aminophosphine of formula (II), which can then be optionally further reacted with a phosphine of the formula (III) to afford the phosphine-aminophosphine of formula (IV).
    Type: Application
    Filed: June 9, 2008
    Publication date: August 12, 2010
    Inventors: Kamaluddin Abdur-Rashid, Xuanhua Chen, Rongwei Guo, Wenli Jia
  • Publication number: 20100204524
    Abstract: The present disclosure relates to a method for the stereoselective production of cis-4-tertbutylcyclohexanol comprising contacting 4-tert-butylcyclohexanone with hydrogen gas, a catalyst comprising a ruthenium-aminophosphine complex and a base, wherein the complex is of the formula RuX2(PNH2)a(P2)b (I), wherein X is anionic ligand, (PNH2) represents an aminophosphine ligand of the formula (II) R1R2P-L-NH2 and (P2) represents a diphosphine ligand of the formula (III) R3R4P-L-PR5R6.
    Type: Application
    Filed: July 7, 2008
    Publication date: August 12, 2010
    Inventors: Kamaluddin Abdur-Rashid, Xuanhua Chen, Rongwei Guo, Wenli Jia