Patents
Patents for C07D 323 - Heterocyclic compounds containing more than two oxygen atoms as the only ring hetero atoms (1,581)
05/2000
05/11/2000DE19851481A1 Destillative Trennung von flüssigen Gemischen enthaltend Formaldehyd, Trioxan, Alkohol und Hemiformal Distillation separation of liquid mixtures containing formaldehyde, trioxane, alcohol and hemiformal
04/2000
04/27/2000WO2000023434A1 Improved phlegmatization of cyclic ketone peroxides
04/27/2000CA2347077A1 Improved phlegmatization of cyclic ketone peroxides
04/25/2000US6054597 Reacting the corresponding dimethyl ester with reducing agent; then hydrazine
04/11/2000US6048523 Polyester cyclic compounds, their complexes and bonded bodies
03/2000
03/30/2000WO2000017188A1 Separation of trioxan from liquid mixtures
03/29/2000EP0988270A1 Method for producing formaldehyde from methanol in a non-oxidating manner
03/29/2000EP0988269A1 Method for producing formaldehyde from methanol
03/23/2000WO2000015216A1 Therapeutic compositions (ii)
03/23/2000DE19842579A1 Production of trioxan from liquid, formaldehyde-containing mixtures with a low water content involves evaporation or sublimation followed by condensation or desublimation to a liquid or solid product
03/23/2000CA2339941A1 Use of cyclic esters of r-3-hydroxybutyrate for treatment of metabolic and neural degenerative disorders
03/22/2000EP0986528A1 Method for producing formaldehyde from methanol in a non-oxidating manner
03/22/2000EP0830349B1 Method for preparing n, n'-disubstitued cyclic ureas
03/22/2000CN1050603C Prepn. of intermediate product used in process for diastereoselective synthesis of nucleosides
03/21/2000US6040462 Calix[4 ]arene dibenzo crown ethers, their preparation process and their use for the selective extraction of cesium ion
03/09/2000WO2000012471A1 Method for the non-oxidative production of formaldehyde from methanol
03/09/2000WO2000012084A1 Geometrically restricted 2-indolinone derivatives as modulators of protein kinase activity
03/09/2000CA2342222A1 Geometrically restricted 2-indolinone derivatives as modulators of protein kinase activity
03/02/2000DE19839740A1 Verfahren zur nicht-oxidativen Herstellung von Formaldehyd aus Methanol A process for the nonoxidative preparing formaldehyde from methanol
03/01/2000EP0982309A2 Volatile organic barium, strontium and calcium compounds and method for the preparation of layered materials with barium, strontium or calcium oxides or fluorides from these compounds
02/2000
02/29/2000US6030720 Liquid electrolyte lithium-sulfur batteries
02/16/2000EP0979286A2 Combinatorial polyketide libraries produced using a modular pks gene cluster as scaffold
02/15/2000CA1340897C 1,2,4-trioxane derivatives
02/02/2000EP0976743A2 Separation of trioxanne from gas mixtures with formaldehyde
01/2000
01/27/2000DE19833620A1 Abtrennung von Trioxan aus gasförmigen Gemischen mit Formaldehyd Removing trioxane from gaseous mixtures with formaldehyde
01/25/2000CA2278907A1 Separating off trioxane from gaseous mixtures with formaldehyde
01/12/2000EP0970069A1 Template-directed ring-closing metathesis and ring-opening metathesis polymerization of functionalized dienes
12/1999
12/29/1999EP0967194A1 Preparation of di-tert-peroxides
11/1999
11/24/1999EP0813550B1 Cyclic ketone peroxides as polymer initiators
11/24/1999CN1046717C Processfor preparing trioxane
11/11/1999WO1999057110A1 Di-peroxy compounds
10/1999
10/19/1999US5969074 Reaction of perfluoroolefins with Bis (Silyl) ethers to produce fluorinated compounds
10/06/1999EP0946484A1 Method for controlling the reactivity of an ozonization reaction product
10/05/1999US5962702 Process for production of trioxane
10/05/1999US5962290 Library of individual cell lines which produce functional modular polyketide synthase for efficient production of antibiotics, anticarcinogenic agents, immunosuppressants, and veterinary products
09/1999
09/22/1999CN1229080A Processes for preparing intermediate product used in method of diastereoselective syntheses of nucleosides
09/22/1999CN1229079A Processes for preparing intermediate product used in method of diastereoselective syntheses of nucleosides
09/22/1999CN1229078A Processes for preparing intermediate product used in method of diastereoselective syntheses of nucleosides
09/21/1999US5955041 Natural circulation reactor and use for producing linear and cyclic acetals
09/16/1999WO1999046228A1 Method for non-oxidative production of formaldehyde from methanol
09/16/1999DE19810087A1 Catalyst exhaustion in non-oxidative catalytic preparation of formaldehyde by methanol dehydration using carbon-free carrier gas
09/01/1999EP0938306A1 ANTIMALARIAL COMPOSITIONS CONTAINING $i(CIS)-FUSED CYCLOPENTENO-1,2,4-TRIOXANE DERIVATIVES
08/1999
08/12/1999WO1999040047A1 Methods for preparing macrocyclic products by ring-closing diine metathesis
08/12/1999DE19804673A1 Verfahren zur Darstellung makrocyclischer Produkte durch ringschliessende Diin-Metathese Process for the preparation of macrocyclic products by ring-closing metathesis Deen
08/12/1999CA2325370A1 Methods for preparing macrocyclic products by ring-closing diine metathesis
07/1999
07/28/1999CN1224013A Method for preparing bicyclohexyl-18-crown-6
07/27/1999US5929257 Process for producing trioxane
07/20/1999US5926687 Crown calix |4| arenes, their preparation process and their use for the selective extraction of cesium and actinides
06/1999
06/01/1999CA2065699C Dry analytical element for lithium assay
05/1999
05/25/1999US5907022 Cyclic ketone peroxides as polymer initiators
05/14/1999WO1999023054A1 Method for purification of formaldehyde, use thereof and plastics produced therewith
05/06/1999DE19748380A1 Verfahren zur Reinigung von Formaldehyd, seine Verwendung sowie damit hergestellte Kunststoffe A process for purifying formaldehyde, its use as well as plastics so produced
04/1999
04/22/1999WO1999019931A1 Liquid electrolyte lithium-sulfur batteries
04/22/1999CA2305454A1 Liquid electrolyte lithium-sulfur batteries
04/14/1999EP0907647A1 Crown calix 4]arenes, method of preparation and use for selective extraction of caesium
03/1999
03/30/1999US5888398 Composition and process for separating cesium ions from an acidic aqueous solution also containing other ions
03/16/1999US5883269 Method for controlling the reactivity of an ozonization reaction product
03/04/1999WO1999010337A1 Tetraether lipid derivatives and liposomes and lipid agglomerates containing tetraetherlipid derivatives, and use thereof
02/1999
02/25/1999DE19736592A1 New macrocyclic tetraether lipid derivatives
02/24/1999EP0772609B1 Cyclic ketone peroxide formulations
02/16/1999US5872263 Scrubbing with countercurrent flow in solvent a formaldehyde trioxane mixture
02/04/1999WO1999005137A1 Method for trioxan isolation
01/1999
01/28/1999DE19732291A1 Verfahren zur Abtrennung von Trioxan A process for removing trioxane
01/14/1999WO1998049315A3 Combinatorial polyketide libraries produced using a modular pks gene cluster as scaffold
01/07/1999DE19814284A1 Formaldehyde from methanol production method
12/1998
12/24/1998DE19814281A1 Verfahren zur nicht oxidativen Herstellung von Formaldehyd aus Methanol A process for the non-oxidative production of formaldehyde from methanol
12/10/1998WO1998055436A1 Method for producing formaldehyde from methanol
12/10/1998WO1998055435A1 Method for producing formaldehyde from methanol in a non-oxidating manner
12/10/1998WO1998055434A1 Method for producing formaldehyde from methanol in a non-oxidating manner
12/10/1998WO1998055433A1 Method for producing formaldehyde from methanol in a non-oxidating manner
12/03/1998DE19814285A1 Verfahren zur Herstellung von Formaldehyd aus Methanol A process for preparing formaldehyde from methanol
12/03/1998DE19814283A1 Verfahren zur nicht oxidativen Herstellung von Formaldehyd aus Methanol A process for the non-oxidative production of formaldehyde from methanol
11/1998
11/10/1998US5834505 Antimalarial drugs
11/05/1998WO1998049315A2 Combinatorial polyketide libraries produced using a modular pks gene cluster as scaffold
11/05/1998CA2288030A1 Combinatorial polyketide libraries produced using a modular pks gene cluster as scaffold
10/1998
10/21/1998EP0871760A1 Recombinant production of novel polyketides
09/1998
09/30/1998EP0734406B1 Polyglycerol production
09/24/1998DE19711078A1 New polyhedral cage-shaped molecules
09/15/1998US5808110 Transportable; storage stable
09/11/1998WO1998039321A1 Crown calix[4]arenes, method of preparation and use for selective extraction of caesium
07/1998
07/16/1998WO1998030557A1 Template-directed ring-closing metathesis and ring-opening metathesis polymerization of functionalized dienes
07/15/1998CN1187818A Process for preparing trioxane
06/1998
06/25/1998WO1998027046A1 Method for controlling the reactivity of an ozonization reaction product
06/17/1998EP0572599B1 Ion-sensitive dyes
06/16/1998US5767294 Multistage reactor-extractor column, cationic ion exchange resin catalyst
06/16/1998US5766424 Process for removing trioxane from an aqueous mixture
06/03/1998CN1038591C Processes for diastereoselective synthesis of nucleosides
05/1998
05/26/1998US5756706 Chemical intermediates
05/07/1998WO1998018462A1 Antimalarial compositions containing cis-fused cyclopenteno-1,2,4-trioxane derivatives
05/07/1998CA2270138A1 Antimalarial compositions containing cis-fused cyclopenteno-1,2,4-trioxane derivatives
05/06/1998CN1181088A Cyclic ketone peroxides as polymer initiators
04/1998
04/28/1998US5744596 Antivirus agent
04/02/1998WO1998013362A1 Process for the purification of trioxane
03/1998
03/25/1998EP0830354A1 Chemical complexes
03/25/1998EP0830349A1 Method for preparing n, n'-disubstitued cyclic ureas
03/24/1998US5731104 Batteries, conductive compositions, and conductive films containing organic liquid electrolytes and plasticizers
02/1998
02/24/1998US5721305 Polyglycerol production
02/10/1998US5717111 Condensation polymerization forming polyester, catalytic depolymerizing in a solvent
01/1998
01/27/1998US5712146 Recombinant combinatorial genetic library for the production of novel polyketides
01/20/1998US5710286 Processes and intermediates for the preparation of cyclic urea HIV protease inhibitors
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16