Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Dichloromethane | HCID 6344 | — |
| Reactant | Methyl 3-amino-4-hydroxybenzoate | HCID 10815 | — |
| Reactant | Sodium Hydroxide | HCID 14798 | — |
| Reactant | (4-Adamantan-1-yl-phenoxymethyl)acetic acid | HCID 16772355 | — |
| Solvent | Trimethyl(phosphooxy)silane | HCID 16133246 | — |
| Product | HCID 24812203 | HCID 24812203 | 64.1% |
Reaction Steps
A mixture of (4-adamantan-1-yl-phenoxymethyl)-acetic acid (200.0 mg, 0.70 mmol) and 3-amino-4-hydroxy-benzoic acid methyl ester (164.3 mg, 0.98 mmol) in PPSE (3 mL) was heated at 140° C. for 2 h. At the end of the reaction period, the mixture was taken to dichloromethane and neutralized with 1 N NaOH solution. The organic layer was separated and the aqueous solution extracted with dichloromethane. The combined extracts were dried over anhydrous MgSO4, filtered and the solvent was removed with rotary evaporator under reduced pressure. The residue was purified by flash chromatography (n-Hexane:EtoAc:MeOH=6:3:1) to afford 2-(4-adamantan-1-yl-phenoxymethyl)-benzoxazole-5-carboxylic acid methyl ester as a white solid (187.3 mg, 64.1% yield).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08394799B2 |
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| Source dataset | uspto-grants-2013_03 |
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| ORD ID | ord-c8c6abfa0e8642a8ae145363186a44ef |
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| Source note | uspto-grants-2013_03 |
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