Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | 3-Methoxypropyne | HCID 69393 | — |
| Reactant | Methyl 2-amino-5-iodo-4-(trifluoromethyl)benzoate | HCID 53436880 | — |
| Catalyst | Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI) | HCID 24350 | — |
| Catalyst | HCID 178418476 | HCID 178418476 | — |
| Solvent | 1,4-Dioxane | HCID 31275 | — |
| Product | HCID 59164526 | HCID 59164526 | 78% |
Reaction Steps
A solution of 2-amino-5-iodo-4-trifluoromethyl-benzoic acid methyl ester (3.0 g, 8.69 mmol) and Et3N (22 mL) in dry dioxane (22 mL) was purged with argon during 15 min. (Ph3P)2PdCl2 (305 mg, 0.435 mmol), CuI (166 mg) and 3-methoxy-propyne (2.20 mL, 26.08 mmol) were added and the mixture was heated to 55° C. for 100 min. After cooling, the reaction mixture was filtered and the filtrate diluted with EtOAc, washed with water and brine and dried (Na2SO4). Evaporation of the volatiles gave a residue which was purified by MPLC (silica gel, cyclohexane/EtOAc 4:1) to yield the title compound (1.94 g, 78%) as a beige solid, m.p. 107-111° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08012988B2 |
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| Source dataset | uspto-grants-2011_09 |
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| ORD ID | ord-422f020711aa4c1cb41c1a9087597310 |
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| Source note | uspto-grants-2011_09 |
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