Water → 5H-1,3-Dioxolo[4,5-f]benzimidazol-6-amine

HRID 1862990Notes

Reaction equation

HRID 1862990 reaction equation
[N:1]#[C:2]Br.[CH2:4]1[O:12][C:11]2[CH:10]=[CH:9][C:8]([NH2:13])=[C:7]([NH2:14])[C:6]=2O1.[OH2:15]>C(O)C>[NH2:1][C:2]1[NH:13][C:8]2[CH:9]=[C:10]3[O:15][CH2:4][O:12][C:11]3=[CH:6][C:7]=2[N:14]=1

Participants

5

Reactant 3

HCID 962WaterHCID 10476Cyanogen BromideHCID 4375721,3-benzodioxole-4,5-diamine

Product 1

HCID 544413675H-1,3-Dioxolo[4,5-f]benzimidazol-6-amine

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

Cyanogen bromide (3.4 g.) in water (60 ml.) was added to 3,4-methylenedioxy-o-phenylenediamine (3.8 g.) in ethanol (60 ml.) to give 2-amino-5,6-methylenedioxybenzimidazole (4.4 g.) m.p. 230°-243° C.

Sources & evidence

ORD record
ord-44c15acab1534bba9b8543927068659f
Source dataset
uspto-grants-1979_09
Patent number
US04167569

Reaction notes

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