تفاعل #61744

معادلة التفاعل

sodium bicarbonate

5-bromofuroic acid

2-piperdinoaniline

1-hydroxybenzotriazole hydrate

triethylamine

1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride

→

crude product

المردود 85.0%

5-Bromo-furan-2-carboxylic acid (2-piperidin-1-yl-phenyl)-amide

المردود 85.0%

المذيبات

DCM

ظروف التفاعل

المعالجة

1. 1
   استخلاصextracted with DCM
2. 2
   تجفيفThe combined organic layers were dried over MgSO4
3. 3
   تركيزconcentrated under reduced pressure

الإجراء التجريبي

A solution of 5-bromofuroic acid (Aldrich) (1.0 mmol), 2-piperdinoaniline (1.0 mmol), 1-hydroxybenzotriazole hydrate (“HOBT”) (1.2 mmol), and triethylamine (“Et3N”) (2 mmol) in DCM (10 mL) was stirred for 10 min at room temperature. 1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (“EDCI”) (1.2 mmol) was then added and the resulting orange solution was stirred overnight. The reaction mixture was treated with saturated sodium bicarbonate (“NaHCO3”) solution (10 mL) and extracted with DCM. The combined organic layers were dried over MgSO4, and concentrated under reduced pressure to afford the crude product as an orange solid. Purification by silica gel chromatography afforded the pure yellow product in 85% yield. MS: 349 (M+1). 1H NMR (CDCl3, 300 MHz): δ 9.75 (br s, 1H), 8.45 (d, 1H), 7.22-7.05 (m, 4H), 6.50 (d, 1H), 3.00-2.80 (m, 4H), 1.95-1.80 (m, 4H), 1.75-1.60 (m, 2H).

المصدر