Sodium Carbonate → 5-(Aminomethyl)thiophene-3-carbonitrile

Temperatur

15 °C

4-Cyanothiophene-2-carbaldehyde oxime 11.6 g (84.6 mmol) of 4-cyanothiophene-2-carbaldehyde were dissolved in 140 ml of methanol, and 12.3 g (116.1 mmol) of sodium carbonate were added. Then 6.5 [lacuna] (93.5 mmol) of hydroxylamine hydrochloride were added in portions while cooling at 15° C., and the mixture was stirred at 10° C. for 2 h. After addition of 80 ml of water, the reaction mixture was extracted five times with 50 ml of diethyl ether each time, the organic phase was dried over sodium sulfate, and the solvent was removed under reduced pressure to result in 12.5 g of the required product as yellow crystalline powder (96% of theory).

1. extractionthe reaction mixture was extracted five times with 50 ml of diethyl ether each time
2. dry with materialthe organic phase was dried over sodium sulfate
3. customthe solvent was removed under reduced pressure

ORD-Eintrag

ord-e51373be831a4b7cb49226545a6b0a86

Quelldatensatz

uspto-grants-2000_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US06114358