تفاعل #87887

معادلة التفاعل

ethyl 2,3-methylenedioxycinnamate

potassium hydroxide

→

2,3-methylenedioxycinnamic acid

المردود 95.0%

المذيبات

methanol

water

water

ظروف التفاعل

المعالجة

1. 1
   تركيزbefore being concentrated in vacuo to half its original volume

الإجراء التجريبي

A solution of ethyl 2,3-methylenedioxycinnamate (3.40 g) in methanol (25 mL) and water (5 mL) was treated with a solution of potassium hydroxide (4.3 g) in water (25 mL). The mixture was stirred overnight at room temperature before being concentrated in vacuo to half its original volume. The concentrate was then acidified with concentrated HCl to give 2,3-methylenedioxycinnamic acid as a colourless solid (2.81 g, 95%) which was collected by filtration and dried overnight under a vacuum.

المصدر