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Class Information
Number: 568/805
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Oxygen containing (e.g., perchlorylbenzene, etc.) > Hydroxy containing (h of -oh may be replaced by a group ia or iia light metal) > Benzene ring containing > Phenols (h of -oh may be replaced by a group ia or iia light metal) > Preparing by dealkylation
Description: Processes which include preparing the compound by the removal of an alkyl group.










Patents under this class:

Patent Number Title Of Patent Date Issued
7253324 Process for the synthesis of biologically active oxygenated compounds by dealkylation of the corresponding alkylethers Aug. 7, 2007
6794548 Method of producing 4,4'-biphenol Sep. 21, 2004
6639094 Process for producing .alpha.-aminoketone derivatives Oct. 28, 2003
6512149 Method for removing butyl groups from butyl phenol compounds Jan. 28, 2003
6399838 Process for preparing 2,6-dimethylphenol Jun. 4, 2002
5969196 Process for preparing 3,5-dimethylphenol Oct. 19, 1999
5463129 Cleaving arylethers Oct. 31, 1995
5324868 Method for preparing 4,4'-biphenol Jun. 28, 1994
5171895 Removal of guaiacol from cresylic acid feedstreams Dec. 15, 1992
5099076 Method for preparing p,p'-biphenol Mar. 24, 1992
5097080 Process for preparing 4,4'-dihydroxybiphenyl Mar. 17, 1992
5072055 Process for the preparation of substituted phenols Dec. 10, 1991
4950808 Process for the preparation of 4,4'-dihydroxybiphenyl Aug. 21, 1990
4891453 Process for producing p,p'-biphenol Jan. 2, 1990
4847435 Process for the recovery of high-purity m-ethylphenol Jul. 11, 1989
4754081 Process for dearylation of alkylenebisphenols and alkyltrisphenols Jun. 28, 1988
4695659 Method for dealkylation of alkyl-aryl ethers Sep. 22, 1987
4667037 Dealkylation of opioid ethers May. 19, 1987
4605790 Phenol from coal and biomass Aug. 12, 1986
4560810 Catalytic dealkylation of alkylated phenols Dec. 24, 1985
4533767 Catalytic hydrodealkylation of alkylated phenols Aug. 6, 1985
4533768 Zinc oxide catalyzed dealkylation of alkylated phenols Aug. 6, 1985
4473713 Hydrolysis of aryl-aliphatic ethers Sep. 25, 1984
4431850 Low temperature hydrodealkylation of alkylated phenols Feb. 14, 1984
4351968 Production of organic compounds Sep. 28, 1982
4230896 Catalytic steam dealkylation of alkyl phenols Oct. 28, 1980
4230895 Thermal hydrodealkylation of alkyl phenols Oct. 28, 1980
4228311 Selective dealkylation of 4-tertiary-alkyl-2,5-xylenol Oct. 14, 1980
4205187 Process for preparing p,p'-biphenol of high purity May. 27, 1980
4191844 Hydrodealkylation process and catalyst Mar. 4, 1980
4189613 Hydrodealkylation process Feb. 19, 1980
4152529 Dealkylation of halogenated alkyl substituted phenols May. 1, 1979
4150243 Process for the dealkylation of tert.-alkyl substituted phenols Apr. 17, 1979
4125560 Aromatic amines synthesis process and products resulting from application of this process Nov. 14, 1978
4112003 Process for preparing polyphenols Sep. 5, 1978
4110253 Method for the disproportionation of highly alkylated phenols with phenol Aug. 29, 1978
4110543 Method of preparing hydrocarbyl-substituted cresols Aug. 29, 1978
4110544 Preparation of cresols Aug. 29, 1978
4100207 Preparation of methyl-substituted phenols Jul. 11, 1978
4071566 Preparation of cresols and xylenols from tetramethylphenols and pentamethylphenol Jan. 31, 1978
4060560 Disproportionation of xylenols with phenol to form cresols Nov. 29, 1977
3998892 Preparation of prehnitenol Dec. 21, 1976











 
 
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