Triethylamine → HCID 57828221, compound

HRID 1644222Notes

Reaction equation

HRID 1644222 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[CH:8]=[C:7]([O:12][Si:13]([C:16]([CH3:19])([CH3:18])[CH3:17])([CH3:15])[CH3:14])[CH:6]=[CH:5]2.[CH2:20]([NH:24][C:25](=[O:34])[O:26][CH2:27][C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1)[CH2:21][C:22]#[CH:23].C(N(CC)CC)C>C1COCC1.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.[Cu]I>[Si:13]([O:12][C:7]1[CH:8]=[C:9]2[C:4](=[CH:5][CH:6]=1)[CH:3]=[C:2]([C:23]#[C:22][CH2:21][CH2:20][NH:24][C:25](=[O:34])[O:26][CH2:27][C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1)[CH:11]=[CH:10]2)([C:16]([CH3:19])([CH3:18])[CH3:17])([CH3:15])[CH3:14]

Participants

7

Reactant 3

HCID 8471TriethylamineHCID 134730832-Bromo-6-[[(1,1-dimethylethyl)dimethylsilyl]oxy]naphthaleneHCID 21185506HCID 21185506, compound

Product 1

HCID 57828221HCID 57828221, compoundYield 37%

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418476HCID 178418476, compoundCatalystHCID 8028TetrahydrofuranSolvent

Procedure

A solution of (6-bromonaphthalen-2-yloxy)(tert-butyl)dimethylsilane (28, 3.4 g, 10.0 mmol), benzyl but-3-ynylcarbamate (17, 2.0 g, 10 mmole), and triethylamine (20 mL) in anhydrous THF (60 mL) pre-cooled to −78° C. was degassed with argon. The mixture was warmed to room temperature and dichlorobis(triphenylphosphine)palladium(11) (PdCl2(PPh3)2 (702 mg, 1 mmole) and CuI (381 mg, 2 mmole) were added rapidly in one portion under argon. The mixture was heated at 60° C. for 4 h, then at room temperature for 48 h. The reaction mixture was filtered through a plug of diatomaceous earth and the filtrate was partitioned between EtOAc (500 mL) and 1 N HCl (200 mL). The aqueous layer was separated and back-extracted with EtOAc (300 mL). The combined organic extracts were washed with water (300 mL) and brine (300 mL), dried over Na2SO4, filtered, and concentrated. The residue was purified by column chromatography (silical gel, 10:1 hexanes/EtOAc) to afford carbamate 29 (1.24 g, 37%) as a brown thick oil: 1H NMR (300 MHz, CDCl3) δ 7.83 (s, 1H), 7.65 (d, J=9.0 Hz, 1H), 7.60 (d, J=8.7 Hz, 1H), 7.39-7.29 (m, 6H), 7.13 (d, J=2.1 Hz, 1H), 7.07 (dd, J=8.7, 2.4 Hz, 1H), 5.17 (br s, 1H), 5.13 (s, 2H), 3.46 (q, J=6.3 Hz, 2H), 2.67 (t, J=6.3 Hz, 2H), 1.01 (s, 9H), 0.25 (s, 6H).

Workup

  1. customwas degassed with argon
  2. temperatureThe mixture was heated at 60° C. for 4 h
  3. filtrationThe reaction mixture was filtered through a plug of diatomaceous earth
  4. customthe filtrate was partitioned between EtOAc (500 mL) and 1 N HCl (200 mL)
  5. customThe aqueous layer was separated
  6. extractionback-extracted with EtOAc (300 mL)
  7. washThe combined organic extracts were washed with water (300 mL) and brine (300 mL)
  8. dry with materialdried over Na2SO4
  9. filtrationfiltered
  10. concentrationconcentrated
  11. customThe residue was purified by column chromatography (silical gel, 10:1 hexanes/EtOAc)

Sources & evidence

ORD record
ord-77a4f61b2afe4fb085bb3ca0c81a77b1
Source dataset
uspto-grants-2012_02
Patent number
US08124607B2

Reaction notes

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