Tetrahydrofuran → HCID 54712201, compound

HRID 905910Notes

Reaction equation

HRID 905910 reaction equation
Br[C:2]1[CH:11]=[C:10]2[C:5]([C:6]([OH:22])=[C:7]([C:14]([NH:16][CH2:17][C:18]([O:20][CH3:21])=[O:19])=[O:15])[C:8](=[O:13])[N:9]2[CH3:12])=[CH:4][CH:3]=1.[C:23]([Si:25]([CH3:28])([CH3:27])[CH3:26])#[CH:24].C(N(C(C)C)C(C)C)C.O1CCCC1>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>[CH3:21][O:20][C:18](=[O:19])[CH2:17][NH:16][C:14]([C:7]1[C:8](=[O:13])[N:9]([CH3:12])[C:10]2[C:5]([C:6]=1[OH:22])=[CH:4][CH:3]=[C:2]([C:24]#[C:23][Si:25]([CH3:28])([CH3:27])[CH3:26])[CH:11]=2)=[O:15]

Participants

7

Reactant 4

HCID 8028TetrahydrofuranHCID 66111TrimethylsilylacetyleneHCID 81531DiisopropylethylamineHCID 54681697Methyl 2-(7-bromo-4-hydroxy-1-methyl-2-oxo-1,2-dihydroquinoline-3-carboxamido)acetate

Product 1

HCID 54712201HCID 54712201, compoundYield 76.3%

Reagents, catalysts & solvents 2

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418476HCID 178418476, compoundCatalyst

Procedure

In a sealed tube was combined methyl 2-(7-bromo-4-hydroxy-1-methyl-2-oxo-1,2-dihydroquinoline-3-carboxamido)acetate (0.75 g, 2.0 mmol), Dichlorobis(triphenylphosphine)palladium(II) (0.14 g, 0.20 mmol), copper(I) iodide (0.077 g, 0.41 mmol), ethynyltrimethylsilane (1.4 ml, 10 mmol), and N-ethyl-N-isopropylpropan-2-amine (2.8 ml, 16 mmol) in tetrahydrofuran (20.0 ml, 2.0 mmol). The tube was flushed with Ar, sealed, and placed in an oil bath at 100° C. for 5 hours. The dark mixture was cooled to rt, filtered and washed with ethyl acetate (2×30 mL). The crude mixture was concentrated, adsorbed onto silica and purified by flash chromatography (15% to 40% EtOAc:Hex gradient) to afford the product as a solid (0.59 g, 75% yield).

Workup

  1. customIn a sealed tube was combined
  2. customThe tube was flushed with Ar
  3. customsealed
  4. filtrationfiltered
  5. washwashed with ethyl acetate (2×30 mL)
  6. concentrationThe crude mixture was concentrated
  7. custompurified by flash chromatography (15% to 40% EtOAc:Hex gradient)

Sources & evidence

ORD record
ord-e3c58afcf81149d593b1ebbf5e1514a3
Source dataset
uspto-grants-2011_09
Patent number
US08012968B2

Reaction notes

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