Ammonia → (4'-Dimethylamino phenyl]-3-ureido benzoquinoneimine

HRID 1413039

Reaction equation

[NH:1]([C:5]1[CH:6]=[C:7]([OH:11])[CH:8]=[CH:9][CH:10]=1)[C:2]([NH2:4])=[O:3].[NH3:12].C1(N)C(F)=C(F)C(F)=C(N)C=1F.Cl.Cl.[CH3:27][N:28]([CH3:36])[C:29]1[CH:34]=[CH:33][C:32](N)=[CH:31][CH:30]=1.S(OOS([O-])(=O)=O)([O-])(=O)=O.[NH4+].[NH4+].[OH2:49]>C(O)(C)C>[CH3:27][N:28]([CH3:36])[C:29]1[CH:34]=[CH:33][C:32]([C:9]2[C:10](=[O:49])[CH:5]([NH:1][C:2]([NH2:4])=[O:3])[C:6](=[NH:12])[C:7](=[O:11])[CH:8]=2)=[CH:31][CH:30]=1

Participants

Conditions

Temperature: 0 °C

Procedure

0.03 mole (4.56 g) of 3-ureido phenol is dissolved in 100 cc of isopropyl alcohol to which have been added 100 cc of ammonia at 22° Be. 350 g of crushed ice are then added to this solution. The resulting reaction mixture is maintained at about 0° C., and there are introduced simultaneously, with good agitation and with the aid of a double funnel, 0.03 mole (6.27 g) of the dihydrochloride of N,N-dimethyl paraphenylenediamine in 50 cc of water and 0.060 mole (13.7 g) of ammonium persulfate in 50 cc of water. At the end of this addition, the agitation is continued for 15 minutes and the above indoaniline which has precipitated is then filtered, washed with water, recrystallized in a mixture of dimethylformamide in water and dried under a vacuum. It exhibits a melting point of 226° C.

Workup

customThe resulting reaction mixture
additionthere are introduced simultaneously, with good agitation and with the aid of a double funnel
additionAt the end of this addition
customthe above indoaniline which has precipitated
filtrationis then filtered
washwashed with water
customrecrystallized in a mixture of dimethylformamide in water
customdried under a vacuum

Sources & evidence

ORD record: ord-4a7cea257bc9420e9612f16fff1bd406
Source dataset: uspto-grants-1981_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04248591

Linked notes

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