Dimethyl Sulfoxide → 2-(4-Formylcyclohexyl)acetonitrile

HRID 1043450Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1043450
C(Cl)(=O)C(Cl)=O.CS(C)=O.[OH:11][CH2:12][CH:13]1[CH2:18][CH2:17][CH:16]([CH2:19][C:20]#[N:21])[CH2:15][CH2:14]1.C(N(CC)CC)C.[Na+].[Cl-]>ClCCl>[CH:12]([CH:13]1[CH2:18][CH2:17][CH:16]([CH2:19][C:20]#[N:21])[CH2:15][CH2:14]1)=[O:11]

Komponenten

7

Edukt 5

HCID 679Dimethyl SulfoxideHCID 5234Sodium ChlorideHCID 8471TriethylamineHCID 65578Oxalyl chlorideHCID 66886391HCID 66886391, Verbindung

Produkt 1

HCID 866132652-(4-Formylcyclohexyl)acetonitrileAusbeute 80,9 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel3×

Versuchsvorschrift

To a stirred solution of oxalyl chloride (0.24 mL, 0.0028 mol) in dichloromethane (15 mL) at −78° C. was added a solution of dimethyl sulfoxide (0.23 mL, 0.0032 mol) in dichloromethane (5 mL). After 10 min. a solution of [4-(hydroxymethyl)cyclohexyl]acetonitrile (0.38 g, 0.0025 mol) in dichloromethane (2 mL) was added to the reaction mixture. After 25 min., the reaction mixture was treated with triethylamine (1.7 mL, 0.012 mol), allowed to warm to room temperature, and then poured into 100 mL of saturated aqueous NaCl. The resulting mixture was extracted with two 100 mL portions of ether, dried (MgSO4), and then evaporated under reduced pressure. Chromatography of the residue on silica gel with 1:10 ethyl acetate/hexanes afforded 0.306 g of the desired product. 1H NMR (300 MHz, CDCl3): δ 9.64 (s, 1H), 2.35 (d, 2H J=10.8 Hz) 1.10-2.4 (m, 10H) (major isomer).

Aufarbeitung

  1. extractionThe resulting mixture was extracted with two 100 mL portions of ether
  2. dry with materialdried (MgSO4)
  3. customevaporated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-5f2a3515bb3549e199349d20cbb2f944
Quelldatensatz
uspto-grants-2013_10
Patentnummer
US08563541B2

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