Tetrahydrofuran → [4-(3,5-Di-tert-butyl-4-methoxy-phenylethynyl)-phenyl]-acetic acid methyl ester

HRID 1935975Notes

Reaction equation

HRID 1935975 reaction equation
[C:1]([C:5]1[CH:10]=[C:9]([C:11]#[CH:12])[CH:8]=[C:7]([C:13]([CH3:16])([CH3:15])[CH3:14])[C:6]=1[O:17][CH3:18])([CH3:4])([CH3:3])[CH3:2].[CH3:19][O:20][C:21](=[O:30])[CH2:22][C:23]1[CH:28]=[CH:27][C:26](I)=[CH:25][CH:24]=1.C(N(CC)CC)C.O1CCCC1>CCCCCC.[Cu]I.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.C(OCC)(=O)C>[CH3:19][O:20][C:21](=[O:30])[CH2:22][C:23]1[CH:24]=[CH:25][C:26]([C:12]#[C:11][C:9]2[CH:10]=[C:5]([C:1]([CH3:4])([CH3:2])[CH3:3])[C:6]([O:17][CH3:18])=[C:7]([C:13]([CH3:16])([CH3:15])[CH3:14])[CH:8]=2)=[CH:27][CH:28]=1

Participants

9

Reactant 4

HCID 8028TetrahydrofuranHCID 8471TriethylamineHCID 10378700Methyl 4-Iodophenylacetate2×HCID 225688511,3-Di-tert-butyl-5-ethynyl-2-methoxy-benzene2×

Product 1

HCID 69549030[4-(3,5-Di-tert-butyl-4-methoxy-phenylethynyl)-phenyl]-acetic acid methyl esterYield 90.8%

Reagents, catalysts & solvents 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418476HCID 178418476, compoundCatalystHCID 8058HexaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

Following General Procedure F and using 1,3-di-tert-butyl-5-ethynyl-2-methoxy-benzene (Intermediate 169, 0.094 g, 0.36 mmol), methyl-4-iodo phenyl acetate (Reagent B, 0.09 g, 0.32 mmol), triethyl amine (5 mL), anhydrous tetrahydrofuran (5 mL), copper(I)iodide (0.02 g, 0.1 mmol) and dichlorobis(triphenylphosphine)palladium(II) (0.06 g, 0.085 mmol) followed by flash column chromatography over silica gel (230-400 mesh) using 10% ethyl acetate in hexane as the eluent, the title compound (0.114 g, 81%) was obtained as an oil.

Sources & evidence

ORD record
ord-cfbee7df22134665998c00252a6aca95
Source dataset
uspto-grants-2002_05
Patent number
US06387892B1

Reaction notes

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