Triethylamine → (2-methyl-1-{2-[5-(4-trimethylsilanylethynyl-phenyl)-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl}-propyl)-carbamic acid methyl ester

HRID 71773

Reaktionsgleichung

Reaktionsgleichung von HRID 71773
[CH3:1][O:2][C:3](=[O:28])[NH:4][CH:5]([C:9]([N:11]1[CH2:15][CH2:14][CH2:13][CH:12]1[C:16]1[NH:17][C:18]([C:21]2[CH:26]=[CH:25][C:24](Br)=[CH:23][CH:22]=2)=[CH:19][N:20]=1)=[O:10])[CH:6]([CH3:8])[CH3:7].[C:29]([Si:31]([CH3:34])([CH3:33])[CH3:32])#[CH:30].C(N(CC)CC)C>CN(C=O)C.C(OCC)(=O)C.[Cu]I.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:1][O:2][C:3](=[O:28])[NH:4][CH:5]([C:9]([N:11]1[CH2:15][CH2:14][CH2:13][CH:12]1[C:16]1[NH:17][C:18]([C:21]2[CH:26]=[CH:25][C:24]([C:30]#[C:29][Si:31]([CH3:34])([CH3:33])[CH3:32])=[CH:23][CH:22]=2)=[CH:19][N:20]=1)=[O:10])[CH:6]([CH3:8])[CH3:7]

Komponenten

8

Edukt 3

HCID 8471TriethylamineHCID 66111TrimethylsilylacetyleneHCID 66620141Methyl (1-(2-(4-(4-bromophenyl)-1H-imidazol-2-YL)pyrrolidin-1-YL)-3-methyl-1-oxobutan-2-YL)carbamate

Produkt 1

HCID 66619941(2-methyl-1-{2-[5-(4-trimethylsilanylethynyl-phenyl)-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl}-propyl)-carbamic acid methyl esterAusbeute 85,7 %

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 178418397HCID 178418397, VerbindungKatalysatorHCID 6228DimethylformamideLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
70 °C

Versuchsvorschrift

A mixture of (1-{2-[5-(4-Bromo-phenyl)-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl}-2-methyl-propyl)-carbamic acid methyl ester (364 mg, 0.81 mmol), Ethynyl-trimethyl-silane (0.68 mL, 4.9 mmol), Copper(I) iodide (154 mg, 0.81 mmol), tetrakis(triphenylphosphine)palladium (94 mg, 0.08 mmol) and triethylamine (0.67 mL, 4.9 mmol) in 5 ml DMF was heated to 70° C. overnight. The reaction mixture was cooled and dissolved in ethyl acetate and washed with 5% lithium chloride aqueous solution. The organic layer was dried (MgSO4), concentrated and purified by flash column chromatography (silica gel, 20 to 100% ethyl acetate/hexane) and followed by preparative reverse phase HPLC (GEMINI, 5 to 100% ACN/H2O+0.1% TFA) to give (2-Methyl-1-{2-[5-(4-trimethylsilanylethynyl-phenyl)-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl}-propyl)-carbamic acid methyl ester (324 mg). LCMS-ESI−: calc'd for C25H34BN4O3Si: 466.65. Found: 467.1 (M+H+).

Aufarbeitung

  1. temperatureThe reaction mixture was cooled
  2. washwashed with 5% lithium chloride aqueous solution
  3. dry with materialThe organic layer was dried (MgSO4)
  4. concentrationconcentrated
  5. custompurified by flash column chromatography (silica gel, 20 to 100% ethyl acetate/hexane)

Quellen und Nachweise

ORD-Eintrag
ord-043d07f9453e43f3bee3e3434a1eaa10
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08822430B2

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