Methyl iodide → HCID 20401742, Verbindung

HRID 2413305Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2413305
[C:1]1([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[CH:6]=[CH:5][C:4]([Si:7]([CH2:10][Cl:11])([CH3:9])[CH3:8])=[CH:3][CH:2]=1.[CH:18]([Li])(CC)C.CN(C)CCN(C)C.CI.[Cl-].[NH4+]>O1CCCC1.CCCCCC>[C:1]1([C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=2)[CH:6]=[CH:5][C:4]([Si:7]([CH3:8])([CH3:9])[CH:10]([Cl:11])[CH3:18])=[CH:3][CH:2]=1

Komponenten

8

Edukt 5

HCID 6328Methyl iodideHCID 8037N,N,N',N'-TetramethylethylenediamineHCID 25517Ammonium ChlorideHCID 13392351HCID 13392351, VerbindungHCID 178418400CID 53628100

Produkt 1

HCID 20401742HCID 20401742, VerbindungAusbeute 79,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittel2×HCID 8058HexaneLösungsmittel

Versuchsvorschrift

A solution of 4.0 g (15.3 mmol) of (1,1'-biphenyl-4-yl)chloromethyldimethylsilane in 20 ml of tetrahydrofuran was cooled to -78°, and 12.5 ml (16.8 mmol) of 1.35 molar sec-butyllithium in hexane was slowly dripped in followed by addition of 2.42 ml (16.1 mmol) of tetramethylethylenediamine. After stirring for one hour at -78°, the solution was warmed to -55° and 1.43 ml (22.9 mmol) of methyl iodide in 5 ml of tetrahydrofuran was added dropwise. The mixture was stirred another 30 minutes at -50°, warmed to room temperature, poured into saturated aqueous ammonium chloride, and extracted with ether. The ether extracts were washed with water and brine, dried over magnesium sulfate, and evaporated to give 3.33 g (65%) of the title compound contaminated by about 18% of an impurity: nmr (CDCl3) 0.3 (s, 2.7H, impurity), 0.4 (6H, s), 1.5 (3H, d, J=7 Hz), 3.5 (1H, q, J=7 Hz) and 7.3-7.7 (m, 13H).

Aufarbeitung

  1. temperaturethe solution was warmed to -55°
  2. stirringThe mixture was stirred another 30 minutes at -50°
  3. extractionextracted with ether
  4. washThe ether extracts were washed with water and brine
  5. dry with materialdried over magnesium sulfate
  6. customevaporated

Quellen und Nachweise

ORD-Eintrag
ord-45e2a6e024de47bb8760fd5d50305e06
Quelldatensatz
uspto-grants-1985_01
Patentnummer
US04496551

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