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Ammonium Chloride → 4-((3,3,5,5-Tetramethylcyclohexylidene){4-[(trimethylsilyl)ethynyl]phenyl}methyl)phenol

HRID 1716081
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1716081
I[C:2]1[CH:7]=[CH:6][C:5]([C:8](=[C:16]2[CH2:21][C:20]([CH3:23])([CH3:22])[CH2:19][C:18]([CH3:25])([CH3:24])[CH2:17]2)[C:9]2[CH:14]=[CH:13][C:12]([OH:15])=[CH:11][CH:10]=2)=[CH:4][CH:3]=1.C(N(CC)C(C)C)(C)C.[CH3:35][Si:36]([C:39]#[CH:40])([CH3:38])[CH3:37].[NH4+].[Cl-]>CN(C=O)C.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.O>[CH3:22][C:20]1([CH3:23])[CH2:19][C:18]([CH3:24])([CH3:25])[CH2:17][C:16](=[C:8]([C:5]2[CH:4]=[CH:3][C:2]([C:40]#[C:39][Si:36]([CH3:38])([CH3:37])[CH3:35])=[CH:7][CH:6]=2)[C:9]2[CH:14]=[CH:13][C:12]([OH:15])=[CH:11][CH:10]=2)[CH2:21]1
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Komponenten

9

Edukt 4

HCID 25517Ammonium ChlorideHCID 66111TrimethylsilylacetyleneHCID 81531DiisopropylethylamineHCID 686545464-[(4-Iodophenyl)(3,3,5,5-tetramethylcyclohexylidene)methyl]phenol

Produkt 1

HCID 686547694-((3,3,5,5-Tetramethylcyclohexylidene){4-[(trimethylsilyl)ethynyl]phenyl}methyl)phenolAusbeute 64 %

Reagenzien, Katalysatoren, Lösungsmittel

4
HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 178418476HCID 178418476, VerbindungKatalysatorHCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To a degassed solution of 4-[(4-Iodophenyl)(3,3,5,5-tetramethylcyclohexylidene)methyl]phenol (144) (0.305 g, 0.68 mmol) in DMF (8 mL) were added Pd(PPh3)2Cl2 (48 mg, 0.07 mmol), CuI (13 mg, 0.07 mmol), N,N-diisopropylethylamine (0.55 mL, 3.10 mmol) and trimethylsilyl acetylene (0.12 mL, 0.82 mmol). The reaction mixture was stirred at room temperature overnight, poured into saturated aqueous NH4Cl (20 mL) and water (10 mL), extracted with EtOAc (2×50 mL). The combined organic phase was washed with water, brine, dried over Na2SO4, filtered, and the filtrate was concentrated to give the crude product as dark brown oil. The crude product was purified by chromatography on a silica gel column eluted with a gradient from hexanes to 15% EtOAc:hexanes to give light brown solid, which was washed with cold hexanes to yield 0.18 g (64%) of the title compound 146 as an off-white solid. 1H NMR (400 MHz, CDCl3): δ 0.22 (s, 9H), 0.89 (s, 6H), 0.92 (s, 6H), 1.27 (s, 2H), 1.91 (s, 2H), 1.97 (s, 2H), 4.55 (br s, 1H), 6.72 (d, J=8.5 Hz, 2H), 7.00 (d, J=8.4 Hz, 2H), 7.08 (d, J=8.2 Hz, 2H), 7.36 (d, J=8.3 Hz, 2H). LCMS (ESI): m/z 415 (M−H)−.

Aufarbeitung

  1. extractionextracted with EtOAc (2×50 mL)
  2. washThe combined organic phase was washed with water, brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationthe filtrate was concentrated
  6. customto give the crude product as dark brown oil
  7. customThe crude product was purified by chromatography on a silica gel column
  8. washeluted with a gradient from hexanes to 15% EtOAc
  9. customhexanes to give light brown solid, which
  10. washwas washed with cold hexanes

Quellen und Nachweise

ORD-Eintrag
ord-185af8df91294e83b090131e1cf29497
Quelldatensatz
uspto-grants-2010_09
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07799828B2

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