Carbonate Esters (i.e, Compounds Having The -o-c(=o)o- Group Bonded Directly To At Least One Carbon, Which Carbon May Be Single Bonded To Any Atom But May Be Multiple Bonded Only To Carbon) Patents (Class 558/260)
With preservative or stabilizer (Class 558/261)
Nitrogen attached directly to the -o-c(=o)o- group by nonionic bonding (e.g., oxime carbonates, urea carbonates, etc.) (Class 558/262)
Oxygen bonded directly to the -o-c(=o)o- group by nonionic bonding (e.g., monoperoxycarbonates, etc.) (Class 558/263)
Plural -o-c(=o)o- groups attached indirectly to each other by nonionic bonding (Class 558/265)
Benzene ring bonded directly to the -o-c(=o)o- group (Class 558/270)
Benzene ring attached indirectly to the -o-c(=o)o- group by nonionic bonding (Class 558/275)
Nitrogen or chalcogen attached indirectly to the -o-c(=o)o- group by acyclic nonionic bonding (Class 558/276)
Two identical or diverse alkyl groups bonded directly to the -o-c(=o)o- group (e.g., dimethyl carbonate, methyl ethyl carbonate, etc.) (Class 558/277)
  • Pyridine ligands for preparation of organic carbonates
    Patent number: 4761467
    Abstract: An organic carbonate such as dimethyl carbonate is prepared by reacting an alcohol such as methanol with carbon monoxide and oxygen in the presence of a catalyst system containing Cu(OMe)Cl as a catalyst and a pyridine compound as a ligand of the catalyst system.
    Type: Grant
    Filed: October 21, 1985
    Date of Patent: August 2, 1988
    Assignee: Texaco Inc.
    Inventor: Ajit K. Bhattacharya
  • Preparation of anhydrous organic acid salts
    Patent number: 4723016
    Abstract: One-step process for preparing anhydrous, organic acid alkali or alkaline earth metal salts by contacting and reacting an organic or polymeric acid fluoride, anhydride or ester and an organic alkali or alkaline earth metal silanolate.
    Type: Grant
    Filed: February 13, 1986
    Date of Patent: February 2, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Bertrand L. Chenard, Evan D. Laganis
  • Process for the preparation of 1-bromoethyl hydrocarbonyl carbonates and new 1-bromoethyl hydrocarbonyl carbonates
    Patent number: 4697032
    Abstract: The invention relates to a process for the preparation of 1-bromoethyl hydrocarbonyl carbonates, characterized in that anhydrous hydrobromic acid is reacted with a vinyl hydrocarbonyl carbonate of formula ##STR1## in which R denotes a saturated, substituted or unsubstituted C.sub.1 -C.sub.12 aliphatic radical or C.sub.5 -C.sub.24 alicyclic radical, or a substituted or unsubstituted aromatic radical, at a temperature between 10.degree. and 100.degree. C.The invention also relates to the new 1-bromoethyl hydrocarbonyl carbonates of formula: ##STR2## These carbonates are particularly sought after for introducing a carbonate group into a molecule.
    Type: Grant
    Filed: November 8, 1985
    Date of Patent: September 29, 1987
    Assignee: Societe Nationale des Poudres et Explosifs
    Inventors: Thierry Malfroot, Marc Piteau, Jean-Pierre Senet
  • Mixtures of tricyclo-decane-derivatives together with their preparation and use are perfuming- and flavoring materials
    Patent number: 4683083
    Abstract: The invention concerns1. Mixtures of tricyclo[5.2.1.0.sup.2,6 ]decane derivatives, having principal isomers corresponding to the general formula A, whereinR.sup.1 and R.sup.2 are hydrogen atoms or are a methyl group or a hydrogen atom, one of the substituents being a methyl group and the other a hydrogen atom,R.sup.3 and R.sup.4 are hydrogen atoms or are a methyl group or a hydrogen atom, one of the substituents being a methyl group and the other a hydrogen atom,Y is a tetrahydrofurane system at C-4/C-5 or a substituted oxymethyl group at C-5 and a hydrogen atom at C-4,R.sup.5 is a hydrogen atom or a C.sub.1 -C.sub.6 -acyl-, C.sub.1 -C.sub.6 -alkyl-, C.sub.1 -C.sub.6 -alkenyl-, C.sub.1 -C.sub.4 -alkoxymethyl-, C.sub.1 -C.sub.2 alkoxycarbonyl-, formylmethyl-, or di-C.sub.1 -C.sub.4 -alkoxyethyl-group, andthe broken lines indicate a C--C-single bond and a C--C-double bond or alternatively two C--C-single bonds. ##STR1## 2.
    Type: Grant
    Filed: January 10, 1985
    Date of Patent: July 28, 1987
    Assignee: Dragoco Gerberding and Co. GmbH
    Inventors: Ernst-Joachim Brunke, Hartmut Struwe
  • Aryl sulfonyl fluoride compounds
    Patent number: 4659855
    Abstract: Certain novel aryl sulfonyl fluorides, their preparation, and their use in inhibiting serine proteases with chymotrypsin-like and elastase-like specificity.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: April 21, 1987
    Assignee: Georgia Tech Research Corporation
    Inventor: James C. Powers
  • Preparation of alkyl carbonates
    Patent number: 4658041
    Abstract: Carbonate compounds are prepared by equilibrium interchange of carbonate functionality between lower alkyl carbonates especially dimethyl carbonate and alkyl halides such as allyl chloride at about 50.degree. C. to about 250.degree. C. in the presence of an initiator such as homogeneous or heterogeneous amines, phosphines, and ammonium or phosphonium quaternary salts.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: April 14, 1987
    Assignee: The Dow Chemical Company
    Inventor: James M. Renga
  • .alpha.-Chlorinated carbonates
    Patent number: 4652665
    Abstract: The invention relates to new .alpha.-chlorinated carbonates characterized in that their formula is: ##STR1## in which X is a fluorine, chlorine or bromine atom and R.sup.1 is different from the ##STR2## group and represents; a substituted or non-substituted, saturated or unsaturated, aliphatic, araliphatic, primary, secondary, tertiary or cycloaliphatic radical.These .alpha.-chlorinated carbonates are prepared by the action of a compound of formula R.sup.1 OH on a chloroformate of formula: ##STR3## in a solvent medium in the presence of an acid scavenger which is added after the two preceding compounds.They are used to block the amine function of amino acids. The .alpha.-chlorinated carbonate and amino acid are reacted in a solvent medium at a temperature of -5.degree. to 100.degree. C. in the presence of an acid scavenger. Blocked amines are very useful in peptide synthesis.
    Type: Grant
    Filed: February 14, 1985
    Date of Patent: March 24, 1987
    Assignee: Societe Nationale des Poudres et Explosifs
    Inventors: Gerard Barcelo, Jean-Pierre Senet, Gerard Sennyey
  • Process of preparing dihydrocarbyl carbonates using a nitrogen-containing coordination compound supported on activated carbon
    Patent number: 4625044
    Abstract: The invention is a composition which comprises a nitrogen-containing coordination compound copper hydrocarbyloxy halide complex supported on activated carbon. This composition is useful as a catalyst for the preparation of dihydrocarbyl carbonates from alcohols, carbon monoxide and oxygen.
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: November 25, 1986
    Assignee: The Dow Chemical Company
    Inventor: Gerald L. Curnutt
  • Preparation of dialiphatic, dialicyclic, or di(aryl-substituted aliphatic) carbonates
    Patent number: 4604242
    Abstract: This invention is a process for the preparation of a symmetrical or unsymmetrical dihydrocarbyl carbonate which comprises contacting an aliphatic, cycloaliphatic or di(aryl-substituted aliphatic) alcohol or mixtures thereof with carbon monoxide and oxygen in the presence of a catalytic amount of bis((2,4-pentanedianato)copper (II) methoxide) and a cocatalytic amount of a basic nitrogen-containing coordination compound under conditions such that a symmetrical or unsymmetrical dihydrocarbyl carbonate is prepared.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: August 5, 1986
    Assignee: The Dow Chemical Company
    Inventors: A. Dale Harley, Jerald L. Curnutt, David T. Doughty