Patents by Inventor Avinash N. Thadani

Avinash N. Thadani 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).

  • Patent number: 8759541
    Abstract: The current application relates to a metal catalyst of formula (I): M[ADC][X]n, wherein M is a metal, ADC is a chiral acyclic diaminocarbene ligand, and X is a neutral or anionic ligand. The ADC ligand is prepared from the corresponding chiral formamidium salt precursor. The metal catalyst is used for asymmetric organic synthesis reactions such as hydrosilations, hydrogenations, conjugate additions, and cross-couplings.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: June 24, 2014
    Inventors: Avinash N. Thadani, Rukundo Ntaganda, Mira M. Beshai
  • Patent number: 8513442
    Abstract: Methods of performing cycloadditions are described that include (a) combining a first reactant and a second reactant in a hydrogen bonding solvent to form a reaction mixture; and (b) reacting the first reactant and the second reactant to form a cycloadduct. Methods of performing asymmetric catalytic reactions are also described that include (a) combining a first reactant, a second reactant, and a catalytic amount of a chiral hydrogen-bond donor in a solvent to form a reaction mixture; and (b) reacting the first reactant and the second reactant to form an enantiomeric excess of a reaction product. Reaction mixtures corresponding to these methods are also described.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: August 20, 2013
    Assignee: The University of Chicago
    Inventors: Viresh H. Rawal, Yong Huang, Aditya K. Unni, Avinash N. Thadani
  • Patent number: 8383859
    Abstract: The present application relates to novel methods for the preparation of primary, secondary and tertiary carbinamine compounds, particularly the preparation of compounds of formulae I, IV and VI, from a carbonyl compound of formula II in the presence of ammonia or an ammonium equivalent of the formula NH4+X?, by way of allylation, crotylation, arylation, reductive amination and catalytic hydrogenation.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: February 26, 2013
    Inventors: Avinash N. Thadani, Bhartesh Dhudshia
  • Patent number: 8350047
    Abstract: The present application relates to novel methods for the preparation of secondary carbinamine compounds, particularly the preparation of secondary carbinamine compounds of the formula Ia, formula Ib or formula IV from aldehydes of the formula II and boronic acids of the formula III or formula V, in the presence of ammonia or an ammonia equivalent of the formula NH4+X?.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: January 8, 2013
    Inventors: Avinash N. Thadani, Bhartesh Dhudshia
  • Patent number: 8143451
    Abstract: The present invention relates to a method for the preparation of tertiary carbinamine compounds from diastereoselective allylation and crotylation of N-unsubstituted imines derived from ketones.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: March 27, 2012
    Assignee: Kanata Chemical Technologies Inc.
    Inventors: Avinash N. Thadani, Bhartesh Dhudshia
  • Publication number: 20110118475
    Abstract: The current application relates to a metal catalyst of formula (I): M[ADC][X]n, wherein M is a metal, ADC is a chiral acyclic diaminocarbene ligand, and X is a neutral or anionic ligand. The ADC ligand is prepared from the corresponding chiral formamidium salt precursor. The metal catalyst is used for asymmetric organic synthesis reactions such as hydrosilations, hydrogenations, conjugate additions, and cross-couplings.
    Type: Application
    Filed: July 7, 2009
    Publication date: May 19, 2011
    Inventors: Avinash N. Thadani, Rukundo Ntaganda, Mira M. Beshai
  • Publication number: 20100298572
    Abstract: The present application relates to novel methods for the preparation of secondary carbinamine compounds, particularly the preparation of secondary carbinamine compounds of the formula Ia, formula Ib or formula IV from aldehydes of the formula II and boronic acids of the formula III or formula V, in the presence of ammonia or an ammonia equivalent of the formula NH4+X?.
    Type: Application
    Filed: March 28, 2008
    Publication date: November 25, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Avinash N. Thadani, Bhartesh Dhudshia
  • Publication number: 20100184999
    Abstract: Methods of performing cycloadditions are described that include (a) combining a first reactant and a second reactant in a hydrogen bonding solvent to form a reaction mixture; and (b) reacting the first reactant and the second reactant to form a cycloadduct. Methods of performing asymmetric catalytic reactions are also described that include (a) combining a first reactant, a second reactant, and a catalytic amount of a chiral hydrogen-bond donor in a solvent to form a reaction mixture; and (b) reacting the first reactant and the second reactant to form an enantiomeric excess of a reaction product. Reaction mixtures corresponding to these methods are also described.
    Type: Application
    Filed: June 11, 2007
    Publication date: July 22, 2010
    Inventors: Viresh H. Rawal, Yong Huang, Aditya K. Unni, Avinash N. Thadani
  • Publication number: 20100174090
    Abstract: The present application relates to novel methods for the preparation of primary, secondary and tertiary carbinamine compounds, particularly the preparation of compounds of formulae I, IV and VI, from a carbonyl compound of formula II in the presence of ammonia or an ammonium equivalent of the formula NH4+X?, by way of allylation, crotylation, arylation, reductive amination and catalytic hydrogenation.
    Type: Application
    Filed: March 28, 2008
    Publication date: July 8, 2010
    Inventors: Avinash N. Thadani, Bhartesh Dhudshia
  • Publication number: 20080139847
    Abstract: The present invention relates to a method for the preparation of tertiary carbinamine compounds from diastereoselective allylation and crotylation of N-unsubstituted imines derived from ketones.
    Type: Application
    Filed: October 4, 2007
    Publication date: June 12, 2008
    Inventors: Avinash N. Thadani, Bhartesh Dhudshia
  • Patent number: 7230125
    Abstract: Methods of performing cycloadditions are described that include (a) combining a first reactant and a second reactant in a hydrogen bonding solvent to form a reaction mixture; and (b) reacting the first reactant and the second reactant to form a cycloadduct. Methods of performing asymmetric catalytic reactions are also described that include (a) combining a first reactant, a second reactant, and a catalytic amount of a chiral hydrogen-bond donor in a solvent to form a reaction mixture; and (b) reacting the first reactant and the second reactant to form an enantiomeric excess of a reaction product. Reaction mixtures corresponding to these methods are also described.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: June 12, 2007
    Assignee: The University of Chicago
    Inventors: Viresh H. Rawal, Yong Huang, Aditya K. Unni, Avinash N. Thadani