CH498795A - Process for the preparation of unsaturated ketones - Google Patents

Process for the preparation of unsaturated ketones

Info

Publication number
CH498795A
CH498795A CH1630968A CH1630968A CH498795A CH 498795 A CH498795 A CH 498795A CH 1630968 A CH1630968 A CH 1630968A CH 1630968 A CH1630968 A CH 1630968A CH 498795 A CH498795 A CH 498795A
Authority
CH
Switzerland
Prior art keywords
preparation
unsaturated ketones
ketones
unsaturated
Prior art date
Application number
CH1630968A
Other languages
French (fr)
Inventor
Erwin Dr Kovats
Edouard Dr Demole
Guenther Dr Ohloff
Max Dr Stoll
Original Assignee
Firmenich & Cie
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CH1566767A priority Critical patent/CH520479A/en
Application filed by Firmenich & Cie filed Critical Firmenich & Cie
Priority to CH1630968A priority patent/CH498795A/en
Priority to CH84870A priority patent/CH503685A/en
Priority to CH84770A priority patent/CH503684A/en
Priority to GB3392/71A priority patent/GB1240310A/en
Priority to DE1807568A priority patent/DE1807568C3/en
Priority to DE19681817884 priority patent/DE1817884C3/en
Priority to GB52779/68A priority patent/GB1240309A/en
Priority to NL686815985A priority patent/NL146801B/en
Priority to BE723610D priority patent/BE723610A/xx
Priority to SE15192/68A priority patent/SE359086B/xx
Priority to IT23548/68A priority patent/IT1034009B/en
Priority to FR1591031D priority patent/FR1591031A/fr
Priority to ES377485A priority patent/ES377485A1/en
Priority to ES377483A priority patent/ES377483A1/en
Priority to DE19702022216 priority patent/DE2022216C3/en
Priority to JP45096901A priority patent/JPS4828428B1/ja
Priority to JP45096900A priority patent/JPS4829217B1/ja
Priority to JP45096897A priority patent/JPS4829215B1/ja
Priority to JP45096898A priority patent/JPS4829216B1/ja
Priority to JP45096899A priority patent/JPS4831105B1/ja
Publication of CH498795A publication Critical patent/CH498795A/en
Priority to US05/503,738 priority patent/US3975310A/en
Priority to US503794A priority patent/US3928456A/en
Priority to US05/523,743 priority patent/US3931326A/en
Priority to NL7500196.A priority patent/NL158159C/en
Priority to NL7502981.A priority patent/NL158160C/en
Priority to US05/782,536 priority patent/US4187863A/en
Priority to US05/900,522 priority patent/US4226892A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11BPRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B9/00Essential oils; Perfumes
    • C11B9/0069Heterocyclic compounds
    • C11B9/0073Heterocyclic compounds containing only O or S as heteroatoms
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L27/00Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
    • A23L27/20Synthetic spices, flavouring agents or condiments
    • A23L27/203Alicyclic compounds
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18Treatment of tobacco products or tobacco substitutes
    • A24B15/28Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/30Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
    • A24B15/34Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances containing a carbocyclic ring other than a six-membered aromatic ring
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/132Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/56Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by isomerisation
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C403/00Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone
    • C07C403/06Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone having side-chains substituted by singly-bound oxygen atoms
    • C07C403/08Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone having side-chains substituted by singly-bound oxygen atoms by hydroxy groups
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C403/00Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone
    • C07C403/14Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone having side-chains substituted by doubly-bound oxygen atoms
    • C07C403/16Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone having side-chains substituted by doubly-bound oxygen atoms not being part of —CHO groups
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/27Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
    • C07C45/29Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation of hydroxy groups
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C47/00Compounds having —CHO groups
    • C07C47/20Unsaturated compounds having —CHO groups bound to acyclic carbon atoms
    • C07C47/21Unsaturated compounds having —CHO groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D303/00Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
    • C07D303/02Compounds containing oxirane rings
    • C07D303/12Compounds containing oxirane rings with hydrocarbon radicals, substituted by singly or doubly bound oxygen atoms
    • C07D303/14Compounds containing oxirane rings with hydrocarbon radicals, substituted by singly or doubly bound oxygen atoms by free hydroxyl radicals
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D303/00Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
    • C07D303/02Compounds containing oxirane rings
    • C07D303/12Compounds containing oxirane rings with hydrocarbon radicals, substituted by singly or doubly bound oxygen atoms
    • C07D303/32Compounds containing oxirane rings with hydrocarbon radicals, substituted by singly or doubly bound oxygen atoms by aldehydo- or ketonic radicals
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11BPRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B9/00Essential oils; Perfumes
    • C11B9/0026Essential oils; Perfumes compounds containing an alicyclic ring not condensed with another ring
    • C11B9/0034Essential oils; Perfumes compounds containing an alicyclic ring not condensed with another ring the ring containing six carbon atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07BGENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B2200/00Indexing scheme relating to specific properties of organic compounds
    • C07B2200/09Geometrical isomers
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00Systems containing only non-condensed rings
    • C07C2601/12Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/16Systems containing only non-condensed rings with a six-membered ring the ring being unsaturated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Toxicology (AREA)
  • Polymers & Plastics (AREA)
  • Food Science & Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Fats And Perfumes (AREA)
  • Confectionery (AREA)
  • Grain Derivatives (AREA)
  • Tea And Coffee (AREA)
  • Manufacture Of Tobacco Products (AREA)
  • Seasonings (AREA)
  • Cosmetics (AREA)
  • Non-Alcoholic Beverages (AREA)
  • Fodder In General (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)
  • Detergent Compositions (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
CH1630968A 1967-11-09 1968-11-01 Process for the preparation of unsaturated ketones CH498795A (en)

Priority Applications (28)

Application Number Priority Date Filing Date Title
CH1566767A CH520479A (en) 1967-11-09 1967-11-09 Use of unsaturated ketones as flavoring agents
CH1630968A CH498795A (en) 1967-11-09 1968-11-01 Process for the preparation of unsaturated ketones
CH84870A CH503685A (en) 1968-11-01 1968-11-01 Unsaturated ketone prodn
CH84770A CH503684A (en) 1968-11-01 1968-11-01 Unsaturated ketone prodn
DE1807568A DE1807568C3 (en) 1967-11-09 1968-11-07 Cycloaliphatic unsaturated ketones, processes for their production and their use as fragrances and flavorings
GB3392/71A GB1240310A (en) 1967-11-09 1968-11-07 Cycloaliphatic unsaturated alcohols
DE19681817884 DE1817884C3 (en) 1967-11-09 1968-11-07 Unsaturated cycloaliphatic alcohols and ketones and processes for their preparation
GB52779/68A GB1240309A (en) 1967-11-09 1968-11-07 Cycloaliphatic unsaturated ketones
NL686815985A NL146801B (en) 1967-11-09 1968-11-08 PROCESS FOR PREPARING A KETONE WITH ODOR AND TASTING PROPERTIES, AND MATERIALS CONTAINING THIS KETONE, AND THE ARTICLES THEREOF.
BE723610D BE723610A (en) 1967-11-09 1968-11-08
SE15192/68A SE359086B (en) 1967-11-09 1968-11-08
IT23548/68A IT1034009B (en) 1967-11-09 1968-11-09 UNSATURATED CYCLOALIPHATIC KETONES
FR1591031D FR1591031A (en) 1967-11-09 1968-11-12
ES377485A ES377485A1 (en) 1968-11-01 1970-03-13 A method for the preparation of ketones. (Machine-translation by Google Translate, not legally binding)
ES377483A ES377483A1 (en) 1968-11-01 1970-03-13 A method for the preparation of ketones. (Machine-translation by Google Translate, not legally binding)
DE19702022216 DE2022216C3 (en) 1969-05-07 1970-05-06 04/17/70 Switzerland 5725-70 Cycloaliphatic unsaturated ketones, process for their production and their use as fragrances and flavorings
JP45096899A JPS4831105B1 (en) 1967-11-09 1970-11-05
JP45096900A JPS4829217B1 (en) 1967-11-09 1970-11-05
JP45096897A JPS4829215B1 (en) 1967-11-09 1970-11-05
JP45096898A JPS4829216B1 (en) 1967-11-09 1970-11-05
JP45096901A JPS4828428B1 (en) 1967-11-09 1970-11-05
US05/503,738 US3975310A (en) 1967-11-09 1974-09-06 Cycloaliphatic unsaturated ketones as odor- and taste-modifying agents
US503794A US3928456A (en) 1967-11-09 1974-09-06 Cycloaliphatic unsaturated ketones as odour- and taste-modifying agents
US05/523,743 US3931326A (en) 1967-11-09 1974-11-14 Alkenoyl-cyclohexadienes
NL7500196.A NL158159C (en) 1967-11-09 1975-01-08 PROCESS FOR PREPARING A KETON WITH ODOR AND TASTING PROPERTIES AND MATERIALS CONTAINING THIS KETONE
NL7502981.A NL158160C (en) 1967-11-09 1975-03-13 PROCESS FOR PREPARING A KETON WITH ODOR AND TASTING PROPERTIES, AND MATERIALS CONTAINING THIS KETONE
US05/782,536 US4187863A (en) 1967-11-09 1977-03-29 Cycloaliphatic unsaturated ketones as odor and taste modifying agents in tobacco products
US05/900,522 US4226892A (en) 1967-11-09 1978-04-27 Flavoring with cycloaliphatic unsaturated ketones

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1566767A CH520479A (en) 1967-11-09 1967-11-09 Use of unsaturated ketones as flavoring agents
CH1630968A CH498795A (en) 1967-11-09 1968-11-01 Process for the preparation of unsaturated ketones

Publications (1)

Publication Number Publication Date
CH498795A true CH498795A (en) 1970-11-15

Family

ID=25716810

Family Applications (2)

Application Number Title Priority Date Filing Date
CH1566767A CH520479A (en) 1967-11-09 1967-11-09 Use of unsaturated ketones as flavoring agents
CH1630968A CH498795A (en) 1967-11-09 1968-11-01 Process for the preparation of unsaturated ketones

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH1566767A CH520479A (en) 1967-11-09 1967-11-09 Use of unsaturated ketones as flavoring agents

Country Status (9)

Country Link
JP (5) JPS4829215B1 (en)
BE (1) BE723610A (en)
CH (2) CH520479A (en)
DE (1) DE1807568C3 (en)
FR (1) FR1591031A (en)
GB (2) GB1240310A (en)
IT (1) IT1034009B (en)
NL (1) NL146801B (en)
SE (1) SE359086B (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2120413C3 (en) * 1971-04-26 1981-04-09 Dragoco Gerberding & Co Gmbh, 3450 Holzminden Trans-2,4,4-trimethyl-1-crotonoylcyclohex-2-ene compounds, processes for their preparation and their use as fragrances or aromatic substances
US4028278A (en) * 1971-08-17 1977-06-07 Firmenich S.A. Cycloaliphatic unsaturated ketones as fragrance modifying agents
GB1390654A (en) * 1972-10-26 1975-04-16 Beheer Bv Pfw Materials for flavours and perfumes and process therefor
US3928645A (en) * 1973-08-07 1975-12-23 Int Flavors & Fragrances Inc Enhancing red-berry flavor with 4-(2,6,6-trimethyl-1,3-cyclohexadien-1-yl)-2-butanone and 4-(6,6-dimethyl-2-methylene-3-cyclohexen-1-yl)-2-butanone
JPS519114U (en) * 1974-07-10 1976-01-23
JPS5341210A (en) * 1976-09-27 1978-04-14 Hitachi Ltd Cassette tape recorder
CH648015A5 (en) * 1977-03-28 1985-02-28 Givaudan & Cie Sa CYCLOHEXENO DERIVATIVES WITH SMELL AND / OR TASTE PROPERTIES.
JPS53163411U (en) * 1977-05-30 1978-12-21
US4206090A (en) * 1978-10-06 1980-06-03 International Flavors & Fragrances Inc. 3-Methyl-1-phenyl-pentanol-5 or its isomer and butanoyl cyclohexane derivatives
US4292447A (en) * 1978-12-15 1981-09-29 International Flavors & Fragrances Inc. Process for hydrogenation of 2,6,6-trimethyl cyclohexene derivatives, products produced thereby and organoleptic uses of said products
US4324704A (en) 1978-12-15 1982-04-13 International Flavors & Fragrances Inc. Process for hydrogenation of damascenone, products produced thereby and organoleptic uses of said products
US4225444A (en) 1979-07-13 1980-09-30 International Flavors & Fragrances Inc. Fragrance compositions containing 3-methyl-1-phenyl-pentanol-5 or specific optical isomers thereof and one or more butanoyl cyclohexane derivatives
JPS5690413U (en) * 1980-11-26 1981-07-18
US4536583A (en) * 1983-08-01 1985-08-20 International Flavors & Fragrances Inc. Process for preparing mixtures containing 8,9-epithio-1-p-menthene
DE3563209D1 (en) * 1984-10-15 1988-07-14 Firmenich & Cie Unsaturated aliphatic ketone and its use as perfuming ingredient
EP0231556A1 (en) * 1986-01-23 1987-08-12 Naarden International N.V. Isopropyl-methyl-butenoyl-cyclohexenes and -cyclohexenes and -cyclohexadienes, and also perfume compositions and perfumed articles and materials which contain said compounds as a perfume ingredient
CN1055078C (en) * 1997-07-08 2000-08-02 云南省化工研究院 Method for synthesizing dihydro turkone
ES2779460T3 (en) * 2015-08-18 2020-08-17 Basf Se Preparation process of alpha-damascone

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1011881B (en) * 1954-07-16 1957-07-11 Hoffmann La Roche Process for the preparation of 8- [2 ', 6', 6'-trimethylcyclohexen- (2 ') - ylidene] -2, 6-dimethyloctadien- (2, 6) -in- (4) -al- (1) and 8- [2 ', 6', 6'-trimethylcyclohexen- (2 ') - ylidene] -2, 6-dimethyloctatriene- (2, 4, 6) -al- (1)
DE1005956B (en) * 1954-12-22 1957-04-11 Hoffmann La Roche Process for the production of vitamin A or its esters
DE1030827B (en) * 1956-02-23 1958-05-29 Hoffmann La Roche Process for the preparation of 4- [3-AEthyl-2, 6, 6-trimethyl-cyclohexen- (2) -yl] -butene- (3) -one- (2)
DE1112736B (en) * 1959-01-16 1961-08-17 Hoffmann La Roche Process for the production of alicyclic ketones with valuable fragrance properties
US3354218A (en) * 1963-05-10 1967-11-21 Hoffmann La Roche Process for preparing 4-(2, 6, 6-trimethyl-4-methoxy-1-cyclohexen-1-yl)-3-buten-2-one
GB1073609A (en) * 1965-03-17 1967-06-28 Reynolds Tobacco Co R Synthesis of dehydroionone

Also Published As

Publication number Publication date
NL146801B (en) 1975-08-15
DE1807568B2 (en) 1975-04-10
DE1817884B2 (en) 1976-11-11
GB1240310A (en) 1971-07-21
DE1807568A1 (en) 1969-06-19
BE723610A (en) 1969-05-08
JPS4829215B1 (en) 1973-09-08
JPS4829216B1 (en) 1973-09-08
JPS4828428B1 (en) 1973-09-01
FR1591031A (en) 1970-04-20
JPS4831105B1 (en) 1973-09-26
NL6815985A (en) 1969-05-13
SE359086B (en) 1973-08-20
GB1240309A (en) 1971-07-21
IT1034009B (en) 1979-09-10
DE1807568C3 (en) 1982-05-13
JPS4829217B1 (en) 1973-09-08
DE1817884A1 (en) 1973-03-29
CH520479A (en) 1972-03-31

Similar Documents

Publication Publication Date Title
CH498795A (en) Process for the preparation of unsaturated ketones
FR96536E (en) Process for the preparation of benzindenes.
CH510602A (en) Process for the preparation of carbonyl compounds
FR1505657A (en) Process for the preparation of substituted diphenylalkylamines
CH447192A (en) Process for the preparation of nitrodiarylamines
FR1533763A (en) Process for the preparation of thio-semicarbazides
FR1485854A (en) Process for the preparation of substituted cyclohexylamines
FR1441516A (en) Process for the preparation of nitro-4-pyrazoles
FR1457155A (en) Process for the preparation of ketones
CH485720A (en) Process for the preparation of 4-aryl-4-aminoalkoxy-piperidines
FR1519387A (en) Process for the preparation of 19-alkenyl steroids
FR1475556A (en) Process for the preparation of metallic fluorphosphates
FR1497477A (en) Process for the preparation of basic ketones
FR1522917A (en) Process for the preparation of substituted cyclopent-2-enones
FR1510878A (en) Process for the preparation of benzindenes
CH489514A (en) Process for the preparation of carboxy-2-thiolanes
FR1473519A (en) Process for the preparation of cyclopentenones
FR1531043A (en) Process for the preparation of methionine
FR1494371A (en) Process for the preparation of 5beta-eta-6-keto-steroids
FR1427431A (en) Process for the preparation of bisaziridines
FR1543203A (en) Process for the preparation of thymus nucleoproteins
FR1540727A (en) Process for the preparation of tritylamines
FR1509315A (en) Process for the preparation of steroid-oxazolines
FR1511207A (en) Process for the preparation of 10 alpha-steroids
FR1512802A (en) Process for the preparation of 17-ethylidene steroids

Legal Events

Date Code Title Description
PL Patent ceased