Hydrochloric Acid → HCID 178478841, compound

HRID 357589Notes

Reaction equation

[ClH:1].[OH:2][NH:3][C:4]([C:6]1[CH:14]=[CH:13][CH:12]=[C:11]2[C:7]=1[CH2:8][CH2:9][C:10]2=[N:15]O)=[NH:5].N[N:18]1[CH:22]=[C:21]([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[N:20]=[C:19]1[NH2:29]>C(O)(C)C>[ClH:1].[ClH:1].[OH:2][NH:3][C:4]([C:6]1[CH:14]=[CH:13][CH:12]=[C:11]2[C:7]=1[CH2:8][CH2:9][C:10]2=[N:15][N:18]1[CH:22]=[C:21]([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[N:20]=[C:19]1[NH2:29])=[NH:5]

Participants

Conditions

Temperature: 80 °C

Procedure

6 ml of 32% hydrochloric acid (Merck, Darmstadt, Germany; p.a.) are added, with stirring, to a mixture of 4.1 g (0.02 mol) of 4-(N-hydroxyamidino)-2,3-dihydro-1H-inden-1-one oxime, 3.5 g (0.02 mol) of 1,2-diamino-4-phenyl-imidazole (see Beyer H. et al., Chem. Ber. 101, 3151 (1968)) and 150 ml of isopropanol, and the mixture is stirred at 80° C. for 5 hours. During that time, the starting materials dissolve and the title compound gradually crystallizes out. At the end of the reaction time, the mixture is cooled. The product that has crystallized out is filtered off with suction, washed with isopropanol and dried. The product crystallizes with one mole of isopropanol, m.p. 238°-240° C., 1H-NMR (DMSO/D2O): δ=8.24 (d, 1H); 7.88 (s, 1H); 7.73 (d, 1H); 7.55-7.68 (m, 3H); 7.34-7.5 (m, 3H); 3.26 (s, 4H).

Workup

dissolutionDuring that time, the starting materials dissolve
customthe title compound gradually crystallizes out
temperatureAt the end of the reaction time, the mixture is cooled
customThe product that has crystallized out
filtrationis filtered off with suction
washwashed with isopropanol
customdried

Sources & evidence

ORD record: ord-078f69c5d622489cbe03007a3ce236de
Source dataset: uspto-grants-1998_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05840911

Reaction notes

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