Potassium Nitrate → HCID 178526417, compound

HRID 1089740Notes

Reaction equation

HRID 1089740 reaction equation
[OH:1][C:2]1[C:11]([OH:12])=[N:10][C:9]2[C:8]3=[N:13][S:14][N:15]=[C:7]3[CH:6]=[CH:5][C:4]=2[N:3]=1.[N+:16]([O-])([O-:18])=[O:17].[K+]>S(=O)(=O)(O)O>[OH:1][C:2]1[C:11]([OH:12])=[N:10][C:9]2[C:8]3=[N:13][S:14][N:15]=[C:7]3[C:6]([N+:16]([O-:18])=[O:17])=[CH:5][C:4]=2[N:3]=1

Participants

4

Reactant 2

HCID 24434Potassium NitrateHCID 178517015HCID 178517015, compound

Product 1

HCID 178526417HCID 178526417, compoundYield 71.2%

Reagents, catalysts & solvents 1

HCID 1118Sulfuric AcidSolvent

Procedure

To a solution of 0,4 g (1,8 mmol) 7,8-dihydroxy-1,2,5-thiadiazolo(3,4-f)quinoxaline in 20 ml concentrated sulfuric acid was added at 0° C. 0,19 g (1,9 mmol) potassium nitrate. Stirring was continued at 0° C. for 30 min. and at 25° C. for 24 h. The reaction mixture was poured into 100 ml ice-water to give 0,34 g (71%) 7,8-dihydroxy-4-nitro-1,2,5-thiadiazolo(3,4-f)quinoxaline as a precipitate, m.p.>300° C. NMR (DMSO-d6): 12,3 (lH, broad s), 11.6 (lH, broad s), 8.43 (lH,s).

Sources & evidence

ORD record
ord-18a6e64f351c49118682b02e0fdd25e1
Source dataset
uspto-grants-1992_01
Patent number
US05079250

Reaction notes

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