Patents Represented by Attorney Joyce R. Niblack
  • Patent number: 6008414
    Abstract: Highly reactive hydroborating agents dioxane-monochloroborane and dioxane-dichloroborane are provided. Also provided by this invention are methods for producing dioxane-monochloroborane, dioxane-dichloroborane and methods for hydroborating olefins with these reagents.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: December 28, 1999
    Assignee: Aldrich Chemical Company, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 5481038
    Abstract: Borane-N,N-diisopropylalkylamines as represented by the formula:H.sub.3 B.NPr.sup.i.sub.2 Rwherein Pr.sup.i is isopropyl, R is branched-chain alkyl or cycloalkyl having 3 to 6 carbon atoms and B is boron are provided. The compounds are new hydroboration agents.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: January 2, 1996
    Assignee: Aldrich Chemical Company, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 5276195
    Abstract: A process for preparing a dimethylorganoborane represented by the formula R*BMe.sub.2 wherein R* is a chiral organyl group attached to the boron, B is boron and Me is methyl comprising treating a chiral boronic ester R*B(OR').sub.2 with a methyl magnesium salt or trimethylaluminum wherein R* is the same chiral organyl group and R' is alkyl.
    Type: Grant
    Filed: July 14, 1993
    Date of Patent: January 4, 1994
    Assignee: Aldrich Chemical Company, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 5220072
    Abstract: A chemically and optically pure B-halodiiso-2-ethylapopinocampheylborane of essentially 100% ee represented by the formula: ##STR1## wherein B is borane and X is halo and a process for preparing.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: June 15, 1993
    Assignee: Aldrich Chemical Co., Inc.
    Inventor: Herbert C. Brown
  • Patent number: 5214209
    Abstract: A novel process for producing hindered and unhindered primary amines represented by the formula RNH.sub.2 and R*NH.sub.2 in high yields from novel intermediates RBMe.sub.2 or R*BMe.sub.2 wherein R is an organo group, R* is a chiral organo group,attached to boron, B is boron and Me is methyl.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: May 25, 1993
    Assignee: Aldrich Chemical Company, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 5210310
    Abstract: A novel process for producing hindered and unhindered primary amines represented by the formula RNH.sub.2 and R*NH.sub.2 in high yields from novel intermediates RBMe.sub.2 or R*BMe.sub.2 wherein R is an organo group, R* is a chiral organo group, attached to boron, B is boron and Me is methyl.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: May 11, 1993
    Assignee: Aldrich Chemical Co., Inc.
    Inventor: Herbert C. Brown
  • Patent number: 5175371
    Abstract: An improved process for preparing either optically pure enantiomer of the bark beetle pheromones ipsenol and ipsdienol is provided. The process is also applicable to the condensation of aldehydes of widely varying properties to the corresponding chiral alcohol.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: December 29, 1992
    Assignee: Aldrich Chemical Company, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 5175378
    Abstract: An improved process for preparing either optically pure enantiomer of the bark beetle pheromones ipsenol and ipsdienol is provided. The process is also applicable to the condensation of aldehydes of widely varying properties to the corresponding chiral alcohol.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: December 29, 1992
    Assignee: Aldrich Chemical Company, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 5087700
    Abstract: A novel process for producing hindered and unhindered primary amines represented by the formula RNH.sub.2 and R*NH.sub.2 in high yields from novel intermediates RBMe.sub.2 or R*BMe.sub.2 wherein R is an organo group, R* is a chiral organo group, attached to boron, B is boron and Me is methyl.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: February 11, 1992
    Assignee: Aldrich Chemical Company, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 5068432
    Abstract: A process for producing the optically pure (+)- or (-) isomer of a phenyl- or substituted- phenylalkanolamine compounds having pharmacologic activity without the need for resolution processes and novel intermediates useful in the process including optically pure haloalcohols are provided.
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: November 26, 1991
    Assignee: Aldrich Chemical Company, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 5043479
    Abstract: Novel chemically pure diisopinocampheylhaloboranes of essentially 100% ee, represented by the formula Ipc.sub.2 BX wherein Ipc is isopinocampheyl and X is halo.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: August 27, 1991
    Assignee: Aldrich Chemical Company, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 4870212
    Abstract: Improved processes for liberating boronic, RB(OR').sub.2, and borinic, RR'BOR', esters from their "ate" complexes, free of alcohol are provided. Pyrolysis of lithium organylborates LiRB(OR').sub.3 and LiRR'BOR', wherein R is an organyl group and R' is straight or branched-chain lower alkyl, directly yields the relatively volatile boronic and borinic esters in high purity, leaving behind a residue of lithium alkoxide. Treatment of the lithium organylborates with an appropriate acid halide cleanly liberates either volatile or non-volatile boronic or borinic esters, readily separated from the lower alkyl ester produced as a by-product. The novel compound lithium dimethylborohydride is also provided.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: September 26, 1989
    Assignee: Aldrich-Boranes, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 4870177
    Abstract: Improved processes for liberating boronic, RB(OR').sub.2, and borinic, RR'BOR', esters from their "ate" complexes, free of alcohol are provided. Pyrolysis of lithium organylborates LiRB(OR').sub.3 and LiRR'BOR', wherein R is an organyl group and R' is straight or branched-chain lower alkyl, directly yields the relatively volatile boronic and borinic esters in high purity, leaving behind a residue of lithium alkoxide. Treatment of the lithium organylborates with an appropriate acid halide cleanly liberates either volatile or non-volatile boronic or borinic esters, readily separated from the lower alkyl ester produced as a by-product. The novel compound lithium dimethylborohydride is also provided.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: September 26, 1989
    Assignee: Aldrich-Boranes, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 4868344
    Abstract: A process for producing the optically pure (+)- or (-) isomer of a phenyl- or substituted- phenylalkanolamine compounds having pharmacologic activity without the need for resoltuion processes ad novel intermediates useful in the process including optically pure haloalcohols are provided.
    Type: Grant
    Filed: March 30, 1988
    Date of Patent: September 19, 1989
    Assignee: Aldrich-Boranes, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 4868337
    Abstract: A process for synthesizing an optically pure ketone comprising the steps of: treating an appropriate optically pure boronic ester with an organolithium compound at -78.degree. C. to obtain the "ate" complex, separating the optically pure borinic ester from the complex and converting said borinic ester into an optically pure ketone represented by the formulae:R*COR.sup.1 and R*COC.tbd.CR.sup.1wherein R* is a chiral organyl moiety and R.sup.1 is an achiral organyl moeity.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: September 19, 1989
    Assignee: Aldrich-Boranes, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 4855506
    Abstract: Improved processes for liberating boronic, RB(OR').sub.2' and borinic, RR'BOR', esters from their "ate" complexes, free of alcohol are provided. Pyrolysis of lithium organylborates LiRB(OR').sub.3 and LiRR'BOR', wherein R is an organyl group and R' is straight or branched-chain lower alkyl, directly yields the relatively volatile boronic and borinic esters in high purity, leaving behind a residue of lithium alkoxide. Treatment of the lithium organylborates with an appropriate acid halide cleanly liberates either volatile or non-volatile boronic or borinic esters, readily separated from the lower alkyl ester produced as a by-product. The novel compound lithium dimethylborohydride is also provided.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: August 8, 1989
    Assignee: Aldrich-Boranes, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 4795821
    Abstract: A process for synthesizing an optically pure ketone comprising the steps of: treating an appropriate optically pure boronic ester with an organolithium compound at -78.degree. C. to obtain the "ate" complex, separating the optically pure borinic ester from the complex and converting said borinic ester into an optically pure ketone represented by the formulae:R*COR.sup.1 and R*COC.tbd.CR.sup.1wherein R* is a chiral organyl moeity and R.sup.1 is an achiral organyl moeity.
    Type: Grant
    Filed: August 29, 1986
    Date of Patent: January 3, 1989
    Assignee: Aldrich-Boranes, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 4772751
    Abstract: Improved processes for liberating boronic, RB(OR').sub.2, and borinic, RR'BOR', esters from their "ate" complexes, free of alcohol are provided. Pyrolysis of lithium organylborates LiRB(OR').sub.3 and LiRR'BOR', wherein R is an organyl group and R' is straight or branched-chain lower alkyl, directly yields the relatively volatile boronic and borinic esters in high purity, leaving behind a residue of lithium alkoxide. Treatment of the lithium organylborates with an appropriate acid halide cleanly liberates either volatile or non-volatile boronic or borinic esters, readily separated from the lower alkyl ester produced as a by-product. The novel compound lithium dimethylborohydride is also provided.
    Type: Grant
    Filed: August 29, 1986
    Date of Patent: September 20, 1988
    Assignee: Aldrich-Boranes, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 4772752
    Abstract: Novel mono- and diisopinocampheylhaloboranes, represented by the formulae IpcBX.sub.2 and Ipc.sub.2 BX wherein Ipc is isopinocampheyl and X is halo, as well as processes for making and using same.
    Type: Grant
    Filed: August 29, 1986
    Date of Patent: September 20, 1988
    Assignee: Aldrich-Boranes, Inc.
    Inventor: Herbert C. Brown
  • Patent number: 4375468
    Abstract: A constant order release aspirin tablet comprising aspirin, from 0.5 to 10 weight percent of a hydrogenated vegetable oil and from 0.5 to 7 weight percent of a saccharide selected from the group consisting of lactose, sucrose, dextrose fructose and maltose. The aspirin tablet is administered once or twice a day for the chronic treatment of arthritis, and has substantially lessened gastrointestinal side effects.
    Type: Grant
    Filed: April 8, 1982
    Date of Patent: March 1, 1983
    Assignee: Verex Laboratories, Inc.
    Inventor: James M. Dunn