Propargyl alcohol → Methyl 2-(3-hydroxyprop-1-yn-1-yl)benzoate
Reaction equation
I[C:2]1[CH:11]=[CH:10][CH:9]=[CH:8][C:3]=1[C:4]([O:6][CH3:7])=[O:5].[CH2:12]([OH:15])[C:13]#[CH:14].CCOC(C)=O>CN(C=O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[Cu]I>[OH:15][CH2:12][C:13]#[C:14][C:2]1[CH:11]=[CH:10][CH:9]=[CH:8][C:3]=1[C:4]([O:6][CH3:7])=[O:5]Participants
7
Reactant 3
Product 1
Reagents, catalysts & solvents 3
Conditions
- Temperature
- 90 °C
Procedure
Methyl 2-iodobenzoate (25 g, 95 mmol), prop-2-yn-1-ol (8.02 g, 143 mmol) and TEA (26.6 ml, 191 mmol) were added to a deareated mixture of Pd(PPh3)4 (0.220 g, 0.191 mmol), copper(I) iodide (0.073 g, 0.382 mmol) in DMF (60 ml). The resulting mixture was stirred at 90° C. for 5 hrs and then at 40° C. overnight. The reaction mixture was poured into EtOAc (600 ml) and washed with brine (600 ml). Organic phase was then concentrated and the dark oil was rinsed with Et2O (600 ml). The mixture was filtered, and then concentrated to give the title compound as deeply brown oil (13.0 g). This compound was used in the next step without any further purification and characterization.
Workup
- customat 40° C.
- customovernight
- washwashed with brine (600 ml)
- concentrationOrganic phase was then concentrated
- washthe dark oil was rinsed with Et2O (600 ml)
- filtrationThe mixture was filtered
- concentrationconcentrated
Sources & evidence
- ORD record
- ord-a23f8093f1b84ab2a485afc1f647c07e
- Source dataset
- uspto-grants-2016_04
- Patent number
- US09321776B2
Reaction notes
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