2-Methyl-5-(trifluoromethyl)-1,3-oxazole-4-carboxylic acid synthesis
- Product Name:2-Methyl-5-(trifluoromethyl)-1,3-oxazole-4-carboxylic acid
- CAS Number:18955-88-9
- Molecular formula:C6H4F3NO3
- Molecular Weight:195.1
18955-88-9
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Yield:1357098-06-6 105 mg
Reaction Conditions:
with hatu;N-ethyl-N,N-diisopropylamine in dichloromethane at 25; for 14 h;
Steps:
394.1 Step-1. N -methoxy-N ,2-dimethyl-5-(trifluoromethyl)-l,3-oxazole-4-carboxamide
HATU (292.0 mg, 0.77 mmol) and A,O-dimethylhydroxylamine (31.0 mg, 0.51 mmol) were added to a stirred mixture of 2-methyl-5-(trifluoromethyl)-l,3-oxazole-4-carboxylic acid (100.0 mg, 0.51 mmol) and DIPEA (199.0 mg, 1.54 mmol) in DMF (5.00 mL). The resulting mixture was stirred at 25 °C for 14 h. The resulting mixture was diluted with EtOAc and washed with water. The organic layers were combined, dried over anhydrous Na2SO4, filtered, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography eluting with petroleum ether/EtOAc (1/1 v/v) to obtain the title compound (105.0 mg) as a solid. LCMS (ESI): 239 [M+H]+.
References:
WO2022/99144,2022,A1 Location in patent:Paragraph 3024-3026
18955-88-9
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$87.00/250mg
6638-79-5
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1357098-06-6
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18955-88-9
27 suppliers
$87.00/250mg
1357098-07-7
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