Patents Assigned to Boulder Scientific Company
  • Synthesis of mono-substituted cyclopentadienes
    Patent number: 7834228
    Abstract: Synthesis of mono-substituted alkylcyclopentadienes by mixing alkyl iodides with cyclopentadienyl magnesium chloride in tetrahydrofuran is described.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: November 16, 2010
    Assignee: Boulder Scientific Company
    Inventors: Karin A. Voll Barclay, Richard D. Crawford, Dawn A. Arkin, Daniel A. Gately
  • Cross-coupling synthesis of alkyl (dialkylphenyl) indenes
    Patent number: 7205427
    Abstract: A cross-coupling synthesis of 2-alkyl-4-(2,6-dialkylphenyl)indenes is described. A 2-alkylidene is treated with a dialkylboronic acid in the presence of a catalyst. A feature of the invention is the use of a cross-coupling catalyst comprising palladium dichloride (1,5-cyclooctadiene) as a cross-coupling catalyst.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: April 17, 2007
    Assignee: Boulder Scientific Company
    Inventor: Hamlin H. Barnes
  • Synthesis of 2,6-dicarbonylpyridines
    Patent number: 6861531
    Abstract: Synthesis of 2,6-dicarbonylpyridines in solution in a hydrocarbon medium is described. The solutions of 2,6-dicarbonylpyridines may be used directly in further syntheses.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: March 1, 2005
    Assignee: Boulder Scientific Company
    Inventor: Daniel A. Gately
  • Synthesis of bis (cyclopentadienyl) and bis (indenyl) ruthenium complexes
    Patent number: 6642402
    Abstract: A process for preparing a cyclopentadienyl or indenyl ruthenium complex by treatment of a cyclopentadienyl or indenyl compound with ruthenium trichloride dihydrate and magnesium powder in an alkanol at 10° C. to −30° C. is described.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: November 4, 2003
    Assignee: Boulder Scientific Company
    Inventors: Karin A. Voll Barclay, Jeffrey M. Sullivan, Dawn A. Arkin, Fredric R. Askham
  • Synthesis of 2, 6-dicarbonylpyridines
    Publication number: 20030187271
    Abstract: Synthesis of 2,6-dicarbonylpyridines in solution in a hydrocarbon medium is described. The hydrocarbon medium solutions of 2,6-dicarbonylpyridines may be used directly in further syntheses.
    Type: Application
    Filed: March 27, 2002
    Publication date: October 2, 2003
    Applicant: Boulder Scientific Company
    Inventor: Daniel A. Gately
  • Conversion of cyclopentadienyl silyl amines to organometallic complexes comprising titanium bisalkoxy moiety or titanium dichloride moiety
    Patent number: 6590114
    Abstract: Conversion of cyclopentadienyl or indenyl compounds to titanium organometallic complexes by treatment with titanium tetraalkoxides is described.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: July 8, 2003
    Assignee: Boulder Scientific Company
    Inventors: Daniel A. Gately, Jeffrey M. Sullivan, Karin A. Voll Barclay, Dawn A. Arkin
  • Synthesis of 2-halobenzyl alkanoic acid
    Patent number: 6586625
    Abstract: A method for synthesizing compounds of Formula I in which R is alkyl or aryl and X is any halogen is described.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: July 1, 2003
    Assignee: Boulder Scientific Company
    Inventors: Hamlin H. Barnes, Fredric R. Askham
  • Preparation of cyclopentadienyl or indenyl titanium trihalides
    Patent number: 6531619
    Abstract: Cyclopentadienyl or indenyl titanium trichlorides are produced by converting a cyclopentadiene or an indene to a corresponding cyclopentadienyl or indenyl titanium trialkoxide which is treated with a halogenating agent to provide the desired cyclopentadienyl or indenyl titanium trichloride.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: March 11, 2003
    Assignee: Boulder Scientific Company
    Inventors: Daniel A. Gately, Jeffrey M. Sullivan, Karin A. Voll Barclay, Dawn A. Arkin
  • Synthesis of bis (cyclopentadienyl) and bis (indenyl) ruthenium complexes
    Publication number: 20030045737
    Abstract: A process for preparing a cyclopentadienyl or indenyl ruthenium complex by treatment of a cyclopentadienyl or indenyl compound with ruthenium trichloride dihydrate and magnesium powder in an alkanol at 10° C. to −30° C. is described.
    Type: Application
    Filed: June 21, 2002
    Publication date: March 6, 2003
    Applicant: Boulder Scientific Company
    Inventors: Karin A. Voll Barclay, Jeffrey M. Sullivan, Dawn A. Arkin, Fredric R. Askham
  • Method for synthesis of hydrocarbyl bridged indenes
    Patent number: 6489526
    Abstract: A method for treating a terminal dihalo hydrocarbyl compound with an alkali metal indenide to produce a bis(indenyl) hydrocarbyl compound is described.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: December 3, 2002
    Assignee: Boulder Scientific Company
    Inventor: Daniel A. Gately
  • Synthesis of bis (cyclopentadienyl) and bis (indenyl) ruthenium complexes
    Publication number: 20020161253
    Abstract: A process for preparing a cyclopentadienyl or indenyl ruthenium complex by treatment of a cyclopentadienyl or indenyl compound with ruthenium trichloride trihydrate and magnesium powder in an alkanol at 0° C. to −30° C. is described.
    Type: Application
    Filed: August 24, 2001
    Publication date: October 31, 2002
    Applicant: Boulder Scientific Company
    Inventors: Karin A. Voll, Jeffrey M. Sullivan, Dawn A. Arkin, Fredric R. Askham
  • Coupling reactions of 2-substituted, 7-haloindenes with aryl substituents to produce metallocene catalyst ligands
    Patent number: 6465700
    Abstract: Novel 2-substituted 7-haloindenes and methods for synthesizing such indenes are described. The 2-substituted 7-haloindenes may be coupled with any aryl group to produce a metallocene catalyst intermediate.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: October 15, 2002
    Assignee: Boulder Scientific Company
    Inventors: Jeffrey M. Sullivan, Hamlin H. Barnes
  • Synthesis and isomerization of 1,2-bis (indenyl) ethanes
    Patent number: 6465667
    Abstract: A method for producing 1,2-bis(indenyl)ethanes in good yield is described. An agent and its application for isomerizing kinetic EBI to thermodynamic EBI and for isomerizing meso TMS-EBI to rac TMS-EBI are exemplified.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: October 15, 2002
    Assignee: Boulder Scientific Company
    Inventor: Daniel A. Gately
  • Constrained geometry ligands and complexes derived therefrom
    Patent number: 6455719
    Abstract: A novel constrained geometry titanium(II) diene complex and ligands of such complexes are described. The novel complex has an olefin polymerization activity substantially in excess of a defined activity standard characteristic of analogous prior art constrained geometry diene complexes. Methods for the synthesis of the novel, high-activity complexes are described.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: September 24, 2002
    Assignee: Boulder Scientific Company
    Inventors: Jeffrey M. Sullivan, Daniel A. Gately
  • Preparation of titanium organometallic complexes comprising a titanium bisalkoxide or dihalide moiety
    Patent number: 6452031
    Abstract: Conversion of a ligand of titanium organometallic complex to a titanium bisalkoxy or a titanium dichloride is described.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: September 17, 2002
    Assignee: Boulder Scientific Company
    Inventors: Daniel A. Gately, Jeffrey M. Sullivan, Karin A. Voll Barclay, Dawn A. Arkin
  • Synthesis and isomerization of 1,2-bis (indenyl) ethanes
    Patent number: 6441258
    Abstract: A method for producing 1,2-bis(indenyl)ethanes in good yield is described. An agent and its application for isomerizing kinetic EBI to thermodynamic EBI and for isomerizing meso TMS-EBI to rac TMS-EBI are exemplified.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: August 27, 2002
    Assignee: Boulder Scientific Company
    Inventor: Daniel A. Gately
  • Synthesis and isomerization of 1,2-bis (indenyl) ethanes
    Publication number: 20020099231
    Abstract: A method for producing 1,2-bis(indenyl)ethanes in good yield is described. An agent and its application for isomerizing kinetic EBI to thermodynamic EBI and for isomerizing meso TMS-EBI to rac TMS-EBI are exemplified.
    Type: Application
    Filed: February 14, 2002
    Publication date: July 25, 2002
    Applicant: Boulder Scientific Company
    Inventor: Daniel A. Gately
  • Synthesis of Tetraalkylcyclopentadienes
    Patent number: 6388151
    Abstract: A method for synthesizing tetramethylcyclopentadiene from 2,3-dibromobutane is described. A 2-bromo-2-butene Grignard is reacted with an ethyl formate to produce a 3,5-dimethyl-2,5-heptadiene-4-ol magnesium bromide which is then quenched with acetic acid to produce 3,5-dimethyl-2,5-hepadiene-4-ol.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: May 14, 2002
    Assignee: Boulder Scientific Company
    Inventors: Jeffrey M. Sullivan, Richard D. Crawford
  • Preparation of titanocenes
    Patent number: RE38683
    Abstract: A method for producing dialkylsilylbis(2-alkyl-4-aryl indenyl) titanocenes including rac-Me2Sibis(2-methyl-4-phenylindenyl)-titanium dichloride is described.
    Type: Grant
    Filed: January 19, 2002
    Date of Patent: January 4, 2005
    Assignee: Boulder Scientific Company
    Inventor: Jeffrey M. Sullivan
  • Method for the production of tetrakis (pentafluorophenyl) borates
    Patent number: RE38325
    Abstract: A process for preparing tetrakis (pentafluorophenyl) borate is described that involves reaction of a pentafluorophenyl magnesium halide with an alkali metal tetrafluoroborate.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: November 18, 2003
    Assignee: Boulder Scientific Company
    Inventor: Terry E. Krafft