Ammonium Chloride → HCID 68893457, Verbindung

HRID 733017Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 733017
[Cl-].[CH3:2][O:3]C[P+](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.[Li][CH2:25][CH2:26][CH2:27][CH3:28].[C:29]1([C:35]([C:52]2[CH:57]=[CH:56][CH:55]=[CH:54][CH:53]=2)([C:46]2[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=2)[O:36][CH2:37][C:38]2[N:43]=C(C=O)C=[CH:40][CH:39]=2)[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1.[NH4+].[Cl-]>C1COCC1.O>[CH3:2][O:3][CH:25]=[CH:26][C:27]1[CH:28]=[CH:40][CH:39]=[C:38]([CH2:37][O:36][C:35]([C:52]2[CH:57]=[CH:56][CH:55]=[CH:54][CH:53]=2)([C:29]2[CH:30]=[CH:31][CH:32]=[CH:33][CH:34]=2)[C:46]2[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=2)[N:43]=1

Komponenten

7

Edukt 4

HCID 25517Ammonium ChlorideHCID 2723798Methoxymethyl-triphenylphosphonium chlorideHCID 21874751HCID 21874751, VerbindungHCID 178418339Butyllithium

Produkt 1

HCID 68893457HCID 68893457, VerbindungAusbeute 95,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

A stirred solution of (methoxymethyl)triphenylphosphonium chloride (2.79 g, 8.13 mmol) in THF (50 mL) at 0° C. was treated dropwise with n-BuLi (1.6-M in hexanes, 5.08 mL, 8.13 mmol), stirred for 1 h, treated with a solution of 6-(triphenylmethoxy)methylpyridine-2-carboxaldehyde (1.54 g, 4.06 mmol) in THF (15 mL) and allowed to warm to room temperature overnight. The reaction was treated with saturated NH4Cl solution (5 mL), diluted with water (50 mL), extracted with EtOAc (2×50 mL) and the combined organic phase diluted with iso-hexane (50 mL), dried (MgSO4), filtered through silica and concentrated in vacuo to give 2-(2-methoxyethenyl)-6-(triphenylmethoxy)methylpyridine (1.58 g) as a yellow oil. A solution of this crude alkene and 10% Pd/C (216 mg, 0.203 mmol) in EtOAc (50 mL) was stirred under a hydrogen atmosphere for 16 h, filtered through Celite and concentrated in vacuo to give the title compound (1.08 g, 65%) as a yellow oil; NMR δH (400 MHz, CDCl3) 7.67-7.64 (1H, m), 7.52-7.49 (6H, m), 7.32-7.21 (10H, m), 7.09-7.07 (1H, m), 4.34 (2H, s), 3.69 (2H, t, J 6.5 Hz), 3.32 (3H, s) and 2.98 (2H, t, J 6.5 Hz); M/Z 410 (M+H)+.

Aufarbeitung

  1. extractionextracted with EtOAc (2×50 mL)
  2. additionthe combined organic phase diluted with iso-hexane (50 mL)
  3. dry with materialdried (MgSO4)
  4. filtrationfiltered through silica
  5. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-1d8459464fb049f2bc07e77e96dfe282
Quelldatensatz
uspto-grants-2009_09
Patentnummer
US07589097B2

Notizen zur Reaktion

Wird geladen…