4,6-DIMETHYL-1H-INDOLE-2,3-DIONE synthesis
- Product Name:4,6-DIMETHYL-1H-INDOLE-2,3-DIONE
- CAS Number:49820-06-6
- Molecular formula:C10H9NO2
- Molecular Weight:175.18
35162-44-8
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49820-06-6
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Yield:49820-06-6 44%
Reaction Conditions:
with sulfuric acid at 80; for 0.5 h;
Steps:
89
N-(3,5-Dimethyl-phenyl)-2-hydroxyimino-acetamide (13.7 g, 71.3 mmol) was added to concentrated sulfuric acid (70 mL) in a 250 mL flask. The reaction mixture was then heated at 80° C. for 30 minutes, then cooled to room temperature, and poured into ice-water (200 mL). The precipitated solid was filtered and washed with water (100 mL) and dried under vacuum to give 4,6-dimethyl-1H-indole-2,3-dione as an orange solid. Yield: 5.53 g (44%)
References:
US2013/281399,2013,A1 Location in patent:Paragraph 0696
108-69-0
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49820-06-6
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266348-54-3
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