Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Methanol | HCID 887 | — |
| Reactant | Sulfuric Acid | HCID 1118 | — |
| Reactant | 4-(2,4-Dimethoxy-6-methyl-phenyl)-4-oxo-butyric acid | HCID 58292820 | — |
| Product | HCID 58292583 | HCID 58292583 | — |
Reaction Steps
A mixture of 4-(2,4-dimethoxy-6-methyl-phenyl)-4-oxo-butyric acid (3.70 g, 14.68 mmol) and concentrated H2SO4 (0.2 mL) in MeOH (50 mL) was heated at 75° C. for 1 hour and concentrated in vacuo. The residue was purified by silica gel flash column chromatography to give 4-(2,4-dimethoxy-6-methyl-phenyl)-4-oxo-butyric acid methyl ester (3.86 g, quant.). 1H NMR (400 MHz, CDCl3) δ 6.70 (s, 1H), 6.50 (s, 1H), 3.90 (s, 3H), 3.85 (s, 3H), 3.65 (s, 3H), 3.10 (t, J=8.1 Hz, 2H), 2.65 (t, J=8.1 Hz, 2H), 2.20 (s, 3H).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08343944B2 |
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| Source dataset | uspto-grants-2013_01 |
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| ORD ID | ord-04c447edbf2847c4be7c67c287f229de |
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| Source note | uspto-grants-2013_01 |
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