Potassium Nitrate → HCID 58419204, compound

HRID 2044136Notes

Reaction equation

HRID 2044136 reaction equation
[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[C:10]([O:12][CH2:13][CH3:14])=[O:11].[N+:15]([O-])([O-:17])=[O:16].[K+]>OS(O)(=O)=O>[N+:15]([C:7]1[CH:8]=[CH:9][C:4]2[N:3]=[C:2]([C:10]([O:12][CH2:13][CH3:14])=[O:11])[S:1][C:5]=2[CH:6]=1)([O-:17])=[O:16]

Participants

4

Reactant 2

HCID 24434Potassium NitrateHCID 640708Ethyl 1,3-benzothiazole-2-carboxylate

Product 1

HCID 58419204HCID 58419204, compound

Reagents, catalysts & solvents 1

HCID 1118Sulfuric AcidSolvent

Procedure

In particular, commercially available ethyl benzothiazole-2-carboxylate 6 (24.1 mmol, 5.0 g) was suspended in 22 ml conc. H2SO4 at 0° C. At 10° C. KNO3 (26.4 mmol, 2.6 g) was added portionwise over 30 min to the stifling solution, not to exceed 15° C. Color of reaction changed from bright green/yellow to yellow over time. The reaction warmed from 25° C. to 40° C. for an additional 30 min. When the temperature of the reaction was decreased, the solution was poured over ice/water). The precipitate forming in solution was collected via glass frit vacuum filtration to yield a light yellow solid 7.

Workup

  1. customAt 10° C
  2. customto exceed 15° C
  3. customColor of reaction
  4. temperatureThe reaction warmed from 25° C. to 40° C. for an additional 30 min
  5. customThe precipitate forming in solution
  6. filtrationwas collected via glass frit vacuum filtration

Sources & evidence

ORD record
ord-2f60e480c31649ecbb32d6f20b8ee37b
Source dataset
uspto-grants-2013_11
Patent number
US08586759B2

Reaction notes

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