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Class Information
Number: 568/940
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Oxygen containing (e.g., perchlorylbenzene, etc.) > Nitro containing (including aci forms) > Benzene ring containing > Nitro bonded directly to benzene ring > Methyl bonded directly to benzene ring (e.g., nitroxylene, etc.)
Description: Compounds which contain a methyl group bonded directly to the benzene ring.










Patents under this class:
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Patent Number Title Of Patent Date Issued
7928270 Process for distillatively removing dinitrotoluene from process wastewater from the preparation of dinitrotoluene by nitrating of toluene with nitrating acid Apr. 19, 2011
7560462 Compounds useful for inhibiting CHK1 Jul. 14, 2009
6953869 Process for working up secondary components in the preparation of dinitrotoluene Oct. 11, 2005
6936741 Process for working up the waste water obtained in the preparation of dinitrotoluene Aug. 30, 2005
6906231 Aromatic nitration reactions Jun. 14, 2005
6825388 Process for the preparation of 4-nitro-o-xylene Nov. 30, 2004
6768032 Continuous isothermal process for preparing mononitrotoluenes in the presence of phosphoric acid Jul. 27, 2004
6703532 Process for the nitration of xylene isomers using zeolite beta catalyst Mar. 9, 2004
6620981 Process for the preparation of nitrotoluenes Sep. 16, 2003
6583327 Continuous isothermal process for preparing mononitrotoluenes Jun. 24, 2003
6515189 Reactions of aromatic compounds Feb. 4, 2003
6506948 Toluene extraction of dinitrotoluene wash water Jan. 14, 2003
6303820 Process for the preparation of nitrosobenzenes Oct. 16, 2001
6291726 Process for nitration of aromatic compounds using a non-acid type nitration process Sep. 18, 2001
6284894 Preparation of allylic aromatic compounds Sep. 4, 2001
6274775 Process for the preparation of nitrosobenzenes Aug. 14, 2001
6255542 Process for preparing 2-chloro-4-nitroalkylbenzene Jul. 3, 2001
6242657 Method for producing aromatic nitro compounds Jun. 5, 2001
5847240 Process for reducing tetranitromethane in compositions containing nitroaromatic compounds Dec. 8, 1998
5763697 Process for the nitration of aromatic compounds Jun. 9, 1998
5728901 Nitration process which employs water tolerant Lewis acid catalysts Mar. 17, 1998
5648565 Process for the adiabatic preparation of mononitrotoluenes Jul. 15, 1997
5395995 Process for the preparation and purification of nitroaromatics Mar. 7, 1995
5315043 Aromatic nucleophilic fluorination May. 24, 1994
5247124 Process for the preparation of substituted styrenes Sep. 21, 1993
5245092 Process for preparing dinitrotoluene with low by-product content Sep. 14, 1993
5237077 Non-pollutional process for producing aromatic nitro compounds without using a mineral acid Aug. 17, 1993
5210339 Process for nitrating benzocyclobutene compounds May. 11, 1993
5194672 Process for the preparation of substituted styrenes Mar. 16, 1993
5162583 Benzylether derivatives Nov. 10, 1992
5149890 Process for the isolation of pure dinitrotoluenes Sep. 22, 1992
5118880 Method of preparing 2-bromo-4,6-dinitromesitylene Jun. 2, 1992
5099080 Process for preparing dinitrotoluene Mar. 24, 1992
5099079 Process for separating acid from nitro substituted aromatics using a molten nitrate salt Mar. 24, 1992
5099078 Process for preparing dinitrotoluene Mar. 24, 1992
5095157 Process for the preparation of 2-chloro-4-nitro-alkylbenzene Mar. 10, 1992
5057632 Process for preparing dinitrotoluene Oct. 15, 1991
5030776 Process for producing nitrobenzenes Jul. 9, 1991
5012019 Process for purifying aromatic nitration products Apr. 30, 1991
5006325 Process for the recovery of nitric acid Apr. 9, 1991
5004846 Process for producing nitrobenzenes Apr. 2, 1991
5001286 Process for separating sulphuric acid and nitric acid from dinitrotoluene mixtures obtained during the nitration of toluene Mar. 19, 1991
4985178 Nonlinear optical device from 3-methyl-4-methoxy-4'-nitrostilbene Jan. 15, 1991
RE33168 Nitration processes Feb. 20, 1990
4831193 Synthesis of 3-amino-2-methylbenzotrifluoride May. 16, 1989
4804792 Nitration of benzene or toluene in a molten nitrate salt Feb. 14, 1989
4650912 Recovery of nitric acid from nitration spent acid by toluene extraction Mar. 17, 1987
4621157 Nitration processes Nov. 4, 1986
4600702 Vapor phase nitration catalysts Jul. 15, 1986
4551568 Process for nitration of benzene Nov. 5, 1985

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