| Patents for C07D 315 - Heterocyclic compounds containing rings having one oxygen atom as the only ring hetero atom according to more than one of groups (1,360) |
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| 01/25/1990 | WO1990000431A1 Purification of butyrolactone |
| 01/17/1990 | EP0350846A2 Condensed heterocyclic compounds and their use in therapy |
| 01/10/1990 | EP0349861A1 Process for the preparation of caprolactone |
| 01/09/1990 | US4892955 Hydrogenation of a dicarboxylic acid, dicarboxylic acid anhydride and/or dicarboxylic acid ester; ruthenium catalyst |
| 11/15/1989 | EP0341773A1 Process for the preparation of lactones |
| 10/25/1989 | EP0339012A1 Process for producing gamma-butyrolactone |
| 09/26/1989 | US4870192 Shape-selective oxidation of cyclic ketones |
| 08/29/1989 | US4861922 Hydroformylation of 3-methyl-3-buten-1-ol and analogs thereof and use of such hydroformylation products |
| 08/16/1989 | EP0089370B1 Production of gamma-decalactone |
| 08/10/1989 | DE3802980A1 Process for the preparation of 5-methylbutyrolactone |
| 08/09/1989 | CN1034541A Vapor-phase hydrogenation of maleic anhydride to tetrahydrofuran and gamma-butyrolactone |
| 08/01/1989 | US4853473 Cyclization of 3-formylcarboxylates or 3-formylcarboxylic acids |
| 07/25/1989 | US4851085 Colorless |
| 06/28/1989 | EP0322140A1 Vapor-phase hydrogenation of maleic anhydride to tetrahydrofuran and gamma-butyrolactone |
| 06/21/1989 | EP0321056A1 Process for concentrating lactones, as well as the use of the concentrate thus obtained for flavouring foodstuffs |
| 05/30/1989 | US4835294 2-Substituted-6-methyl-1,3-dioxan-4-one |
| 05/16/1989 | US4831166 Reacting alkylene oxide with acylacetate using ionic halide catalyst |
| 05/02/1989 | US4827001 Preparation of γ-butyrolactone and 1,4-butanediol by catalytic hydrogenation of maleic acid |
| 03/23/1989 | DE3730186A1 Process for the preparation of 5-methylbutyrolactone |
| 03/15/1989 | EP0306875A2 Process for the preparation of 5-methyl butyrolactone |
| 03/01/1989 | EP0305089A1 Process for the asymmetric production of carboxylic acid esters and/or carboxylic acids |
| 02/28/1989 | US4808735 Mixing with water, alcohol, thio or acid, heating, distilling |
| 02/01/1989 | EP0301852A2 Process for the production of gamma-butyrolactone |
| 12/13/1988 | CA1246616A1 Process for the production of butane-1,4-diol |
| 12/07/1988 | EP0293748A2 Process for the preparation of 2(5H)-furanones |
| 12/07/1988 | EP0293659A2 Process for the preparation of gamma-undecalactone from omega-undecylenoic acid |
| 11/29/1988 | US4788334 Acid accelerated hydrocarboxylation |
| 11/03/1988 | DE3713750A1 Process for the preparation of 3,4-dihydro-4,4-dialkyl- alpha -pyrones, and carboxylates of dihydro-5-hydroxymethyl-2(3H)-furanones |
| 11/02/1988 | CN88102282A Process for decreasing ketene tripolymer in diketen rude products |
| 11/01/1988 | US4782167 Process for preparing butyrolactones and butanediols |
| 10/26/1988 | EP0287894A2 Process for reducing the amount of ketene trimer in diketene |
| 10/18/1988 | CA1243310A1 20-amino macrolide derivatives |
| 09/20/1988 | US4772729 Catalytic |
| 09/20/1988 | US4772728 Method for making bicycle lactones from beta, gamma unsaturated cyclic nitriles |
| 08/30/1988 | US4767882 Tetrahydronaphthalene derivatives and their production |
| 08/30/1988 | US4767869 Process for the production of gamma-butyrolactone |
| 08/10/1988 | EP0277562A2 Hydrogenation of citric acid and substituted citric acids to 3-substituted tetrahydrofuran, 3- and 4-substituted butyrolactones and mixtures thereof |
| 08/10/1988 | EP0277168A1 PROCESS FOR THE CO-PRODUCTION OF BUTANE-1,4-DIOL AND $i(GAMMA)-BUTYROLACTONE |
| 07/27/1988 | EP0276012A2 Process for preparing butyrolactones and butanediols |
| 07/19/1988 | CA1239411A1 Process for preparing 3-methyl-2-butene-4-olide(4- methyl-2-(5h)-furane-2-one) |
| 07/13/1988 | EP0274076A2 Acid accelerated hydrocarboxylation |
| 05/11/1988 | EP0266878A2 Substituted dioxanones, method for preparing same and use thereof |
| 04/27/1988 | CN87105386A 工艺过程 Process |
| 04/26/1988 | US4740603 Oxidation of cyclohexanone with crude percarboxylic acid solution |
| 04/26/1988 | CA1235694A1 Guanidylfungin derivatives and their production |
| 03/29/1988 | US4734511 From 2,2-dimethyl-4-pentenoic acid and hbr |
| 03/09/1988 | EP0258993A2 Production of lactones |
| 02/24/1988 | EP0256813A1 Purification of gamma-butyrolactone |
| 02/11/1988 | WO1988000937A1 Process for the co-production of butane-1,4-diol and gamma-butyrolactone |
| 02/03/1988 | EP0255400A1 Process for the production of butyrolactone |
| 01/19/1988 | US4720556 3-oxabicyclo-(3,1,0)-hexan-2-ones |
| 11/25/1987 | EP0246581A2 Process for the preparation of alpha-substituted gamma-butyrolactones |
| 11/17/1987 | CA1229341A1 Oxidation of unsaturated organic compounds with hydrogen peroxide |
| 10/27/1987 | US4703128 Microbiocides, fungicides |
| 10/06/1987 | CA1227805A1 SUBSTITUTED FURANONES AS WELL AS PROCESSES FOR THE PREPARATION OF 3,4-DIHYDRO-.alpha.-PYRONES AND SUBSTITUTED FURANONES |
| 06/16/1987 | US4673759 Process for the preparation of 2-alkyl cyclopent-2-enones |
| 06/16/1987 | US4673751 Controlled heating of 5-hydroxymethyl-gammabutyrolactone in a heat transfer oil |
| 06/03/1987 | EP0223814A1 PROCESS FOR THE PRODUCTION OF $i(GAMMA)-BUTYROLACTONE |
| 05/05/1987 | US4663468 Rhodium catalyst, copper and zinc or chromium oxides catalyst |
| 04/22/1987 | EP0219199A1 Method for preparation of lactones |
| 04/22/1987 | EP0219117A2 A method for producing alpha,alpha-dimethyl-delta-valerolactone |
| 04/21/1987 | US4659843 In presence of palladium compounds |
| 04/14/1987 | US4658043 Ethers of pantolactone |
| 01/06/1987 | US4634780 Process for the production of lactones |
| 12/18/1986 | WO1986007358A1 Process for the production of gamma-butyrolactone |
| 11/25/1986 | US4625049 Sulfides of nickel and group 5b, 6b or actinide, acids, alcohols, aldehydes, esters |
| 10/28/1986 | US4620017 Catalytic hydrogenation of succinic anhydride to butyrolactone |
| 10/28/1986 | US4620016 Preparation of butyrolactone by catalytic hydrogenation of succinic anhydride |
| 10/14/1986 | CA1212689A1 Alcohol carbonylation process using a nickel catalyst |
| 09/10/1986 | EP0194144A2 Process for the preparation of 2-Alkyl-Cyclopent-2-Enones |
| 09/09/1986 | US4611069 Hydriodic acid or hydrobromic acid catalysts |
| 08/19/1986 | CA1209921A1 Therapeutic composition for treatment of cardiovascular diseases |
| 07/22/1986 | US4602114 From 4-penten-1-ol and carbon monoxide, palladium complex catalyst |
| 07/02/1986 | CA1206969A 2-aryl-2-1-h-azoyl(alkyl)-gamma-butyrolactones |
| 06/24/1986 | US4596879 Process for producing intermediate furanones from diol derivative and thionyl chloride |
| 06/11/1986 | EP0184055A1 Process for producing gamma-butyrolactone by catalytic hydrogenation of maleic acid, fumaric acid and/or succinic acid esters |
| 05/13/1986 | US4588845 Transition metal containing cation exchange resin |
| 04/23/1986 | EP0178909A2 Guanidylfungin derivatives and their production |
| 04/22/1986 | US4584419 Process for the production of butane-1,4-diol |
| 04/02/1986 | EP0176370A1 Process for the production of lacetones |
| 03/25/1986 | US4578400 Therapeutic composition and method for treatment of cardiovascular diseases |
| 02/26/1986 | EP0172371A1 Process for the preparation of dehydroxypantolactone |
| 02/11/1986 | CA1200558A1 Process for the isolation of crystalline 1,3- cyclohexanedione |
| 02/04/1986 | US4568757 Configurationally locked retinoids |
| 02/04/1986 | US4568470 Use of macrocyclic lactone in augmenting or enhancing aroma or taste of consumable materials |
| 01/14/1986 | US4564689 G-vinyl-g-butyrolactone from butadiene and acetic acid, manganese salts |
| 12/31/1985 | US4562270 Catalytic heating of hjydroxy substituted furanone |
| 12/24/1985 | US4560775 Production of lactone in molten salt electrolysis |
| 12/24/1985 | US4560656 Production of γ-decalactone |
| 12/24/1985 | US4560551 12-methyloxacyclododec-4-en-2-one, 12-methyloxacyclododeca-4,7-dien-2-one, hexanal, octanal, nonanal |
| 12/17/1985 | US4559168 Use of macrocyclic lactone in augmenting or enhancing aroma or taste of consumable materials |
| 11/27/1985 | EP0162265A1 The preparation of substituted gamma butyrolactones useful as intermediates for making fungicidal imidazoles and triazoles |
| 10/29/1985 | US4550181 Heating an aqueous solution containing a hydrogen halide acid catalyst |
| 09/18/1985 | EP0155002A2 Hydroformylation of 3-methyl-3-buten-1-ol and use of such hydroformylation products |
| 09/18/1985 | EP0084286B1 Process for the preparation of epsilon-caprolactone |
| 09/17/1985 | US4541950 Use of macrocyclic lactone in augmenting or enhancing aroma or taste of consumable materials |
| 09/10/1985 | US4540797 Acxid hydrolysis of diastereomeric ethers |
| 09/09/1985 | EP0089370A4 Production of gamma-decalactone. |
| 08/21/1985 | EP0152027A2 Process for the preparation of 3-methyl-2-buten-4-olide(4-methyl-2-(5H)-furan-2-one) |
| 07/02/1985 | US4526990 Synthesis of γ-vinyl-γ-butyrolactone from acetoxyhexenoic acids |