Reaktion #684956

Reaktionsgleichung

Dimethylamine

triethylamine

1-(3-dimethylaminopropyl)-3-ethylcarbodiimide

4-pentynoic acid

→

title compound

N,N-dimethyl-4-pentynamide

Lösungsmittel

methylene chloride

Reaktionsbedingungen

Aufarbeitung

1. 1
   WaschenThe reaction mixture was washed successively with 1 N hydrochloric acid
2. 2
   Trocknena saturated aqueous sodium hydrogencarbonate solution, water, and saturated brine, dried over anhydrous magnesium sulfate
3. 3
   Einengenconcentrated under reduced pressure

Vorschrift

Dimethylamine (2 M solution in tetrahydrofuran, 8.53 ml), triethylamine (2.59 ml), and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (3221 mg), were added to a solution of 4-pentynoic acid (552 mg) in methylene chloride (150 ml) and this reaction mixture was stirred at room temperature for 24 hours. The reaction mixture was washed successively with 1 N hydrochloric acid, a saturated aqueous sodium hydrogencarbonate solution, water, and saturated brine, dried over anhydrous magnesium sulfate, then concentrated under reduced pressure to give the title compound (129 mg). The obtained compound was used in the following reaction without further purification.

Quelle