Triethylamine → HCID 57424257, compound

HRID 1869976Notes

Reaction equation

HRID 1869976 reaction equation
[CH2:1]([O:3][C:4](=[O:15])[C:5]([C:8]1[CH:13]=[CH:12][CH:11]=[C:10](Br)[CH:9]=1)([CH3:7])[CH3:6])[CH3:2].C(N(CC)CC)C.[CH3:23][Si:24]([C:27]#[CH:28])([CH3:26])[CH3:25].C(OCC)(=O)C>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>[CH2:1]([O:3][C:4](=[O:15])[C:5]([CH3:7])([C:8]1[CH:13]=[CH:12][CH:11]=[C:10]([C:28]#[C:27][Si:24]([CH3:26])([CH3:25])[CH3:23])[CH:9]=1)[CH3:6])[CH3:2]

Participants

8

Reactant 4

HCID 8471TriethylamineHCID 8857Ethyl AcetateHCID 66111TrimethylsilylacetyleneHCID 12805127Ethyl 2-(3-bromophenyl)-2-methylpropanoate2×

Product 1

HCID 57424257HCID 57424257, compoundYield 90.3%

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418476HCID 178418476, compoundCatalystHCID 8058HexaneSolvent2×

Procedure

Following General Procedure D and using 2-(3-bromo-phenyl)-2-methyl-propionic acid ethyl ester (Intermediate 130, 0.77 g, 2.84 mmol), triethyl amine (5 mL), copper(I)iodide (0.044 g, 0.23 mmol), trimethylsilyl acetylene (2 mL, 14.1 mmol) and dichlorobis(triphenylphosphine)palladium(II) (0.159 g, 0.23 mmol) followed by flash column chromatography over silica gel (230-400 mesh) using hexane to 5% ethyl acetate in hexane as the eluent, the title compound (0.74 g, 90%) was obtained as an orange oil.

Sources & evidence

ORD record
ord-76ee18149627444298b80bd225f1d1b0
Source dataset
uspto-grants-2009_12
Patent number
US07638648B2

Reaction notes

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