تفاعل #162377

معادلة التفاعل

oxalyl chloride

dimethyl sulfoxide

NaCl

[4-(hydroxymethyl)cyclohexyl]acetonitrile

triethylamine

→

desired product

المردود 80.9%

(4-formylcyclohexyl)acetonitrile

المردود 80.9%

المذيبات

dichloromethane

dichloromethane

dichloromethane

ظروف التفاعل

المعالجة

1. 1
   استخلاصThe resulting mixture was extracted with two 100 mL portions of ether
2. 2
   تجفيفdried (MgSO4)
3. 3
   أخرىevaporated under reduced pressure

الإجراء التجريبي

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, 10 H) (major isomer).

المصدر