Nitric Acid → 4-Nitrotoluene

HRID 2372570Notes

Reaction equation

HRID 2372570 reaction equation
[N+]([C:4]1[C:5]([N+]([O-])=O)=[C:6]([CH3:10])[CH:7]=[CH:8][CH:9]=1)([O-])=O.[N+:14]([O-:17])(O)=[O:15]>C1(C)C=CC=CC=1>[N+:14]([C:9]1[CH:8]=[CH:7][C:6]([CH3:10])=[CH:5][CH:4]=1)([O-:17])=[O:15]

Participants

4

Reactant 2

HCID 944Nitric AcidHCID 117612,3-Dinitrotoluene

Product 1

HCID 74734-Nitrotoluene

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

U.S. Pat. No. 2,362,743 describes the preparation of dinitrotoluene by the nitration of toluene with nitric acid of about a 70% concentration to produce mononitrotoluene, followed by further nitration with nitric acid of about 98% concentration to produce a crude dinitrotoluene. This patent states that the use of the concentrated nitric acid is an improvement over the use of sulfuric acid alone and mixtures of sulfuric and nitric acids as nitrating agents. The crude dinitrotoluene produced by the process of the patent is stated to be subjected to several steps of washing, neutralizing, alcohol treatment, and centrifuging to obtain the 2,4-dinitrotoluene.

Workup

  1. concentrationof about a 70% concentration

Sources & evidence

ORD record
ord-4652891322cb4022ab5d2b17fe4edd4d
Source dataset
uspto-grants-1992_03
Patent number
US05099079

Reaction notes

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