| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Production of optically active beta-hydroxyketone | JP6006796 | 1996-02-22 | JPH09227441A | 1997-09-02 | FUJISAWA TAMOTSU; SHIMIZU MAKOTO |
| PROBLEM TO BE SOLVED: To selectively obtain the subject compound important as a starting raw material for a physiologically active compound, by using a readily obtainable specific lactone as a chiral pool and subjecting the lactone to ring opening reaction with a Lewis acid. SOLUTION: An optically active β-trihalomethyl-β-propiolactone is subjected to ring opening reaction with a Lewis acid (e.g. aluminum chloride) as shown by the formula (X is Cl, Br or F; ring A is a benzene ring, a pyrrole ring, a pyridine ring or a naphthalene ring; R is a 1-4C alkyl, an alkoxy or benzyloxy; (n) is 1-5) to give the objective compound such as (R)-3-hydroxy-1-phenyl-4,4,4- trichloro-1-butanone. For example, preferably an aromatic compound such as benzene is present and the reaction temperature is -30°C to a room temperature. COPYRIGHT: (C)1997,JPO | ||||||
| 102 | JPH0446955B2 - | JP17920589 | 1989-07-13 | JPH0446955B2 | 1992-07-31 | JATSUKU MARUTERU; JAN TESHIIE; ANDORE TESHU |
| 103 | JPH0138773B2 - | JP386782 | 1982-01-13 | JPH0138773B2 | 1989-08-16 | IMAI HIROSUKE; MATSUNO MITSUO; YUASA HITOSHI |
| 104 | JPS6341896B2 - | JP23188785 | 1985-10-17 | JPS6341896B2 | 1988-08-19 | YOSHIKOSHI AKIRA; KIDO HIDEO; OOCHI HIROYUKI; HARA SUSUMU |
| 105 | Production of carvenone | JP25370885 | 1985-11-14 | JPS62114926A | 1987-05-26 | FUJIWARA YOSHITO; NOMURA MASATO; IGAWA KAZUNARI |
| PURPOSE: To obtain the titled compound which is a synthetic intermediate for carvomenthone or other perfume substances in high yield and improved and high selectivity, by thermally isomerizing limonene-1,2-epoxide in the presence of synthetic zeolite under reduced pressure using simple operations and appa ratuses. CONSTITUTION: Limonene-1,2-epoxide is heated at about 150W210°C under about 3W15mmHg reduced pressure and brought into contact with synthetic zeolite, particularly preferably A, X, Y, L, mordenite, ZSM-5 or a mixture of two or more thereof to afford the aimed carvenone, i.e. 2-methyl-5-isopropyl-5- cyclohexen-1-one. EFFECT: The catalyst can be repeatedly used. COPYRIGHT: (C)1987,JPO&Japio | ||||||
| 106 | JPS6154772B2 - | JP4200180 | 1980-04-02 | JPS6154772B2 | 1986-11-25 | IWAMOTO MINORU; TAKAGI KEIICHI; KUBOTA NOBORU; KOJO KUNIO |
| 107 | JPS6043353B2 - | JP885680 | 1980-01-30 | JPS6043353B2 | 1985-09-27 | KAARU HAINRITSUHI SHURUTE ERUTE; AANORUDO HAUZAA; GYUNTAA OOROFU |
| 108 | Diarylindan-1,3-dione, preparation and use | JP21408384 | 1984-10-12 | JPS60109541A | 1985-06-15 | AREKISANDAA KATSUPURUZU KIYANB; DONARUDO FUREISAA MERUBUN SUTE |
| 109 | Inductive and termiticidal compound, composition and use | JP17619883 | 1983-09-22 | JPS5978135A | 1984-05-04 | GUREN DEII PURESUTOUITSUCHI |
| 110 | Preparation of 6,6-dimethyl-undec-3-ene-2,5,10-trione | JP5200479 | 1979-04-28 | JPS55143924A | 1980-11-10 | KATOU KUNIO; KANEKO HAJIME; FUJIMORI MINE; SHIGA MIKIO; MIUCHI AKIYOSHI |
| PURPOSE: To obtain the title high-purity trans-form compound, useful as a tobacco flavor enhancer safely, in high yield in a large quantity industrially, by treating a mixture comprising a cis-triketone formed through photooxidation of β-ionone with iodine. CONSTITUTION: A 4-(2,6,6-trimethylcylohex-1-enyl)-but-3-en-2-one (β-ionone) of formula I is photooxidized to give a mixture of cis-6,6-dimethylundec-3-en-2,5,10- trione (cis-triketone) of formula II, α-pyran peroxide, and dihydroactinidiolide. The mixture is then purified and treated with iodine in an organic solvent under cooling in ice to convert or isomerize the cis-triketone and α-pyran peroxide to a trans- triketone of formula III. COPYRIGHT: (C)1980,JPO&Japio | ||||||
| 111 | Novel pyran compound | JP885680 | 1980-01-30 | JPS55102582A | 1980-08-05 | KAARU HAINRITSUHI SHIYURUTE ER; AANORUDO HAUZAA; GIYUNTAA OOROFU |
| 112 | Novel 3**benzoylpropiophenone and its manufacture | JP3515478 | 1978-03-27 | JPS54128553A | 1979-10-05 | SHIOIRI TAKAYUKI; KAWAI NOBUTAKA; BAN MASATOSHI |
| 113 | Production of 2-hydroxy-3-alkyl-2-cyclopentenone | JP947878 | 1978-01-31 | JPS54103842A | 1979-08-15 | KAMOGAWA KOUICHI |
| PURPOSE: 3-Alkyl-2,3-epoxycyclopentanone is brought into contact with a strong acid type ion-exchange resin in the presence of a non-aquous solvent to produce readily title compound useful for a flavor even with use of a large amount of an expensive catalyst. CONSTITUTION: 3-Alkyl-2,3-epoxycyclopentanone as 3-methyl-2,3-epoxycyclopentanone is brought into contact with a strong acid type ion-chchange resin as Amberlite 15 made by Rohm & Haas Co. in the presence of an aqueous solvent as acetone or tetrahydrofuran at 0 - 120, preferably 20 - 80°C to produce 2-hydroxy-3-alkyl- 2-cyclopentenone. COPYRIGHT: (C)1979,JPO&Japio | ||||||
| 114 | Process for preparing saturated and unsaturated dialdehyde | JP16094377 | 1977-12-27 | JPS5392708A | 1978-08-15 | FURANSESUKO SHIKURAARI; PIEERU PAORO ROTSUSHI; SESAARU GUAITA; BUITO RUAKUKUWA |
| 115 | JPS5318493B2 - | JP9734973 | 1973-08-31 | JPS5318493B2 | 1978-06-15 | |
| 116 | JPS5049257A - | JP9734973 | 1973-08-31 | JPS5049257A | 1975-05-01 | |
| 117 | JPS4941194B1 - | JP1389770 | 1970-02-19 | JPS4941194B1 | 1974-11-07 | |
| 118 | Electrochemical and photoelectrochemical reduction of furfurals | US15843717 | 2017-12-15 | US11008662B2 | 2021-05-18 | Kyoung-Shin Choi; John James Roylance; Stephen Riley Kubota |
| Electrochemical cells and photoelectrochemical cells for the reduction of furfurals are provided. Also provided are methods of using the cells to carry out the reduction reactions. Using the cells and methods, furfurals can be converted into furan alcohols or linear ketones. | ||||||
| 119 | Method for producing cyclic diketone compound | US15533251 | 2015-12-22 | US10087129B2 | 2018-10-02 | Kenji Tanino; Daichi Sakoda; Shu Sakamoto |
| Provided is a method for producing a compound represented by general formula (I) by oxidative cleavage of a compound of formula (II), which is a bicyclic tetrasubstituted olefin compound, using hydrogen peroxide. The method for producing a compound represented by general formula (I) includes a step of subjecting a compound represented by general formula (II) to oxidative cleavage using hydrogen peroxide in the presence of an acid catalyst or in the presence of a tungstic acid compound to obtain the compound represented by general formula (I): [In the formulae, formula -A1- (where the front bond denotes a bond that bonds with a carbon atom C1 while the back bond denotes a bond that bonds with a carbon atom C2) is an alkylene group having 2 to 6 carbon atoms that may have been substituted and that may further include an ether bond, an ester bond, a secondary amino group, a thioether group, or these, and formula -A2- (where the front bond denotes a bond that bonds with a carbon atom C1 while the back bond denotes a bond that bonds with a carbon atom C2) is an alkylene group having 4 to 10 carbon atoms that may have been substituted and that may further include an ether bond, an ester bond, a secondary amino group, a thioether group, or these.] | ||||||
| 120 | Process for preparing 3-methylcyclopentadecane-1,5-dione | US15578959 | 2016-06-02 | US10053409B2 | 2018-08-21 | Miriam Bru Roig; Stefan Rüdenauer |
| The present invention relates to a process for producing 3-methylcyclopentadecane-1,5-dione of formula (I), which comprises the oxidation of 14-methyl-bicyclo[10.3.0]pentadecen[1 (12)] of formula (II) with an oxidizing agent, where the oxidation is performed by using a mixture of formic acid with H2O2 as sole oxidizing agent in the presence of water and where the amount of H2O2 is at least 1.1 mol H2O2 per mol of the compound of formula (II). | ||||||
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