Perborate Esters Or Chalcogen Analogues Thereof (i.e., Compounds Having The -x-x- Group, Wherein The X's Are The Same Or Diverse Chalcogens, Bonded Directly To Boron And To Carbon, Which Carbon May Be Single Bonded To Any Atom But May Be Multiple Bonded Only To Carbon) Patents (Class 560/305)
  • Patent number: 5306855
    Abstract: This invention is a process for converting lower alkanes into their corresponding esters and optionally into various intermediates (such as alcohols) and other liquid hydrocarbons. The alkanes are oxidatively converted to oxy-esters at high selectivity and conversion and at practical reaction rates using at least catalytic amounts of certain class "B" metals and/or metal ions defined by the Pearson definition as "soft" or "borderline". Desirable catalysts comprise such metals as Pd, Tl, Pt, Hg, and Au. If so desired, the alkyl oxy-esters may be converted to alcohols or other intermediates such as alkyl halides. The oxy-esters, alcohols, and other intermediates may optionally be converted to liquid hydrocarbons such as gasoline.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: April 26, 1994
    Assignee: Catalytica, Inc.
    Inventors: Roy A. Periana, Douglas J. Taube, Henry Taube, Eric R. Evitt
  • Patent number: 5288742
    Abstract: The invention concerns .alpha.,.alpha.-dialkylbenzyl derivatives of the formula I ##STR1## wherein Ar.sup.1 is phenyl or naphthyl, or a 10-membered bicyclic heterocyclic moiety containing one or two nitrogen heteroatoms and optionally containing a further heteroatom selected from nitrogen, oxygen and sulphur;A.sup.1 is a direct link to X.sup.1 or is (1-3C)alkylene;X.sup.1 is oxy, thio, sulphinyl or sulphonyl;the phenylene group may optionally bear one or two substituents R.sup.3 ;each of R.sup.1 and R.sup.2, which may be the same or different, is (1-4C)alkyl, (2-4C)alkenyl, (2-4C)alkynyl, fluoro-(1-4C)alkyl, phenyl or phenyl-(1-4C)alkyl, provided that both of R.sup.1 and R.sup.2 are not methyl or fluoromethyl; andQ is cyano, amino, nitro, formyl, (1-4C)alkoxy, thiazolyl or (2-4C)alkanoyl;or a pharmaceutically-acceptable salt thereof;processes for their manufacture; pharmaceutical compositions containing them and their use as 5-lipoxygenase inhibitors.
    Type: Grant
    Filed: March 18, 1992
    Date of Patent: February 22, 1994
    Assignees: Imperial Chemical Industries PLC, ICI Pharma
    Inventors: Philip N. Edwards, David Waterson
  • Patent number: 5233113
    Abstract: This invention is a process for converting lower alkanes into their corresponding esters and optionally into various intermediates (such as methanol) and other liquid hydrocarbons. The alkanes are oxidatively converted to oxy-esters at high selectivity using catalytic amounts of a Group VIII noble metal. If so desired, the alkyl oxy-esters may be converted to alcohols or other intermediates such as alkyl halides. The oxy-esters, alcohols, and other intermediates may optionally be converted to liquid hydrocarbons such as gasoline.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: August 3, 1993
    Assignee: Catalytica, Inc.
    Inventors: Roy A. Periana, Eric R. Evitt, Henry Taube