Tetrahydrofuran → 2,6-Di-tert-butyl4-trimethylsilanylethynyl-phenol

HRID 1935972Notes

Reaction equation

HRID 1935972 reaction equation
Br[C:2]1[CH:7]=[C:6]([C:8]([CH3:11])([CH3:10])[CH3:9])[C:5]([OH:12])=[C:4]([C:13]([CH3:16])([CH3:15])[CH3:14])[CH:3]=1.C(N(CC)CC)C.O1CCCC1.[CH3:29][Si:30]([C:33]#[CH:34])([CH3:32])[CH3:31]>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:8]([C:6]1[CH:7]=[C:2]([C:34]#[C:33][Si:30]([CH3:32])([CH3:31])[CH3:29])[CH:3]=[C:4]([C:13]([CH3:16])([CH3:15])[CH3:14])[C:5]=1[OH:12])([CH3:11])([CH3:10])[CH3:9]

Participants

8

Reactant 4

HCID 8028TetrahydrofuranHCID 8471TriethylamineHCID 66111TrimethylsilylacetyleneHCID 708294-Bromo-2,6-di-tert-butylphenol

Product 1

HCID 225689242,6-Di-tert-butyl4-trimethylsilanylethynyl-phenol

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418476HCID 178418476, compoundCatalystHCID 8058HexaneSolvent

Procedure

Following General Procedure D and using 4-bromo-2,6-di-t-butyl-phenol (1.43 g, 5 mmol), triethyl amine (15 mL), anhydrous tetrahydrofuran (15 mL), copper(I)iodide (0.06 g, 0.31 mmol), trimethylsilyl acetylene (4.9 g, 50 mmol) and dichlorobis(triphenylphosphine)palladium(II) (0.18 g, 0.26 mmol) followed by flash column chromatography over silica gel (230-400 mesh) using hexane as eluent, the title compound was obtained (1.35 g, 90%).

Sources & evidence

ORD record
ord-f0ad87a4b30845bea1adeba8283970f3
Source dataset
uspto-grants-2002_05
Patent number
US06387892B1

Reaction notes

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