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Class Information
Number: 568/341
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Oxygen containing (e.g., perchlorylbenzene, etc.) > Ketones > Processes of preparing, purifying, or recovering alicyclic ring containing ketones > Isomerization
Description: Processes wherein the compound is produced by transformation or rearrangement of the elements of a starting compound without adding or taking away any elements.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8710273 Method for isomerisation of hop alpha-acids using heterogeneous alkaline earth metal based catalysts Apr. 29, 2014
8394994 Method for producing of 2-alkyl-2-cycloalken-1-one Mar. 12, 2013
8378147 Process for producing a 2-alkyl-2-cycloalkene-1-one Feb. 19, 2013
8222458 Process or synthesis of (3S)- and (3R)-3-hydroxy-beta-ionone, and their transformation to zeaxanthin and beta-cryptoxanthin Jul. 17, 2012
8058479 Method for purifying acetone Nov. 15, 2011
7902404 Method for producing optically active .alpha.-ionone Mar. 8, 2011
7674765 Method for producing cyclohexadecanone Mar. 9, 2010
7622614 Methods for production of 5-epi-.beta.-vetivone, 2-isopropyl-6,10-dimethyl-spiro [4.5]deca-2,6-dien-8-one, and 2-isopropyl-6,10-dimethyl-spiro[4.5]deca-1,6-dien-8-one Nov. 24, 2009
7569732 Cyclisation process Aug. 4, 2009
7414158 Process for epimerising cyclohexenyl ketones and its application in Aldol condensation process Aug. 19, 2008
7348304 Fragrance material Mar. 25, 2008
7332633 Process for the preparation of optically active cyclohexenones Feb. 19, 2008
7262329 Process for making intermediates for fragrance components from .alpha.-campholenic aldehyde Aug. 28, 2007
7250536 Process for the isomerisation of a cyclohexenyl alkyl or alkenyl ketone Jul. 31, 2007
7241551 Positive-working resist composition Jul. 10, 2007
7057077 Method for producing 2- (alkyl) cycloalkenone Jun. 6, 2006
6958421 Salt-free preparation of cyclobutanone Oct. 25, 2005
6951964 Method for producing macrocyclic ketones Oct. 4, 2005
6884913 Method for preparation of alpha, beta-unsaturated cyclic ketones by dehydrogenation of secondary allylic cyclic alcohols Apr. 26, 2005
6861563 Process for preparation of cyclododecanone Mar. 1, 2005
6833481 Process for producing 2-alkyl-2cyclopentenones Dec. 21, 2004
6822121 Production process of cyclohexenyl ketones Nov. 23, 2004
6815413 Macrocyclic ketones Nov. 9, 2004
6770618 (1S,6R)-2,2,6-Trimethylcyclohexyl methyl ketone and/or (1R,6S)-2,2,6-trimethylcyclohexyl methyl ketone, process for producing the same, and perfume composition containing the same Aug. 3, 2004
6583322 Dihydro and hexahydro isoalpha acids having a high ratio of trans to cis isomers, production thereof, and products containing the same Jun. 24, 2003
6548711 Process for producing 2-vinylcyclododecanone Apr. 15, 2003
6521796 Dihydro and hexahydro isoalpha acids having a high ratio of trans to cis isomers, production thereof, and products containing the same Feb. 18, 2003
6500990 Method for producing jasmonate derivatives and intermediates thereof Dec. 31, 2002
6469215 Process for the production of an intermediate mixture of .beta.-isophorone epoxide and its isomer 4-hydroxyisophorone (HIP) Oct. 22, 2002
6444841 Hydroquinone diester derivatives and the method for producing the same Sep. 3, 2002
6423874 Process for obtaining fragrant ketone Jul. 23, 2002
6420609 Process for the production of 2,2,6-trimethylcyclohexane-1,4-dione Jul. 16, 2002
6388140 Method and producing cyclododecanone compound May. 14, 2002
6329535 Process for preparing esterified chroman compounds Dec. 11, 2001
6274771 Continuous process for the manufacture of 3,5,5-trimethylcyclohexa-3-en-1-one (B-isophorone) Aug. 14, 2001
6274772 Continuous process for the manufacture of 3,5,5-trimethylcyclohexa-3-en-one(.beta.-isophorone) Aug. 14, 2001
6265617 Process for the preparation of 3,5,5-trimethylcyclohexa-3-en-1-one (.beta.-isophorone) by isomerization of 3,5,5- trimethylcyclohexa-2-en-1-one (.alpha.-isophorone) Jul. 24, 2001
6198004 Process for hydrogenation of isoalpha acids Mar. 6, 2001
6005147 Method of producing 3, 5, 5-trimethylcyclohexa-3-ene-1-one(.beta.-isophorone) by the isomerization of 3, 5, 5-trimethylcyclohexa-2-ene-1-(.alpha.-isophorone) Dec. 21, 1999
5917093 Purification of .alpha.-acids and .beta.-acids Jun. 29, 1999
5908956 Method for producing trimethylhydroquinone diester Jun. 1, 1999
5907065 Method of producing .beta.-isophorone by the isomerization of .alpha.-isophorone May. 25, 1999
5886231 Process for the production of 2-(substituted benzoyl) 1,3 cyclohexanediones Mar. 23, 1999
5576462 Preparation of .alpha.-hydroxyketones Nov. 19, 1996
5334768 Process for the production of a cycloalkanone and/or a cycloalkanol Aug. 2, 1994
5321164 Use in perfumery of 2(1-vinyl-5-hexenyl) cyclopentanone, a process for preparing same, and process intermediates Jun. 14, 1994
5296637 Production of odor-free tetrahydroisohumulates from alpha acids via their tetrahydrohumulates and subsequent isomerization Mar. 22, 1994
5276197 Process for manufacture of beta-isophorone Jan. 4, 1994
5235110 Fragrant composition Aug. 10, 1993
5185470 Process for producing irone Feb. 9, 1993

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