Triethylamine → 3-tert-Butyl-2-isopropoxy-6-methyl-5-trimethylsilanylethynyl-benzaldehyde

HRID 2377470Notes

Reaction equation

HRID 2377470 reaction equation
Br[C:2]1[C:3]([CH3:18])=[C:4]([C:7]([O:14][CH:15]([CH3:17])[CH3:16])=[C:8]([C:10]([CH3:13])([CH3:12])[CH3:11])[CH:9]=1)[CH:5]=[O:6].C(N(CC)CC)C.[CH3:26][Si:27]([C:30]#[CH:31])([CH3:29])[CH3:28].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>[C:10]([C:8]1[C:7]([O:14][CH:15]([CH3:17])[CH3:16])=[C:4]([C:3]([CH3:18])=[C:2]([C:31]#[C:30][Si:27]([CH3:29])([CH3:28])[CH3:26])[CH:9]=1)[CH:5]=[O:6])([CH3:13])([CH3:12])[CH3:11]

Participants

8

Reactant 4

HCID 8471TriethylamineHCID 8857Ethyl AcetateHCID 66111TrimethylsilylacetyleneHCID 211071513-Bromo-5-tert-butyl-6-isopropoxy-2-methyl-benzaldehyde2×

Product 1

HCID 211071563-tert-Butyl-2-isopropoxy-6-methyl-5-trimethylsilanylethynyl-benzaldehyde

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 3-bromo-5-tert-butyl-6-isopropoxy-2-methyl-benzaldehyde (Intermediate 141, 0.43 g, 1.37 mmol), triethyl amine, copper(I)iodide (0.021 g, 0.11 mmol), trimethylsilyl acetylene (1 mL), and dichlorobis(triphenylphosphine)palladium(II) (0.077 g, 0.11 mmol) followed by flash column chromatography over silica gel (230-400 mesh) using 2% ethyl acetate in hexane as the eluent, the title compound was obtained (0.45 g, ˜100%).

Sources & evidence

ORD record
ord-273dc0d3572d4e6fa57742dafe7e5987
Source dataset
uspto-grants-2008_12
Patent number
US07468391B2

Reaction notes

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