Réaction #157822

Équation de réaction

Water

2,3-dichloro-5,6-dicyano-1,4-benzoquinone

(5R)-5-[(E)-2-(4-tert-butylphenyl)-2-{5-methoxy-6-[(4-methoxybenzyl)oxy]-pyridin-2-yl}ethenyl]-1-(2,4-dimethoxybenzyl)pyrrolidin-2-one

→

6-{(E)-1-(4-tert-butylphenyl)-2-[(2R)-1-(2,4-dimethoxybenzyl)-5-oxopyrrolidin-2-yl]ethenyl}-3-methoxypyridin-2(1H)-one

Rendement 39.7%

Solvants

chloroform

Chloroform

Conditions de réaction

Traitement

1. 1
   FiltrationAfter filtration
2. 2
   Autrethe solvent was evaporated under reduced pressure
3. 3
   AutreThe resulting residue was purified by silica gel column chromatography (chloroform:methanol=1:0→95:5 9:1)

Mode opératoire

Water (0.2 mL) and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (72 mg) were added to a solution of (5R)-5-[(E)-2-(4-tert-butylphenyl)-2-{5-methoxy-6-[(4-methoxybenzyl)oxy]-pyridin-2-yl}ethenyl]-1-(2,4-dimethoxybenzyl)pyrrolidin-2-one (202 mg) in chloroform (4 mL), and the mixture was stirred at 65° C. for 21 hours. Chloroform was added. After filtration, the solvent was evaporated under reduced pressure. The resulting residue was purified by silica gel column chromatography (chloroform:methanol=1:0→95:5 9:1) to give 6-{(E)-1-(4-tert-butylphenyl)-2-[(2R)-1-(2,4-dimethoxybenzyl)-5-oxopyrrolidin-2-yl]ethenyl}-3-methoxypyridin-2(1H)-one (65 mg).

Source