تفاعل #2500938

معادلة التفاعل

HCl

(2-Naphthoxy)acetic acid

1,1'-carbonyldiimidazole

alphaamino-p-toluic acid

chlorotrimethylsilane

→

N-(4-Carboxybenzyl)-(2-naphthoxy)acetamide

المذيبات

methylene chloride

methylene chloride

triethylamine

ظروف التفاعل

المعالجة

1. 1
   workup.ADDITIONis added in small portions
2. 2
   workup.STIRRINGshaken
3. 3
   ترشيحafter which the resultant precipitate is collected by suction filtration
4. 4
   أخرىThe precipitate is recrystallized from methanol/2N HCl, m.p. 188°-189° C. as N-(4-carboxybenzyl)-(2-naphthoxy)acetamide

الإجراء التجريبي

(2-Naphthoxy)acetic acid (8.5 g) is suspended in 160 mL methylene chloride and treated with 1,1'-carbonyldiimidazole (6.8 g) which is added in small portions. After stirring for 3 hrs at room temperature under a nitrogen atmosphere, the mixture is added dropwise to a previously prepared solution of alphaamino-p-toluic acid (1.4 g), chlorotrimethylsilane (10 mL), and triethylamine (11 mL) in 250 mL methylene chloride at 0° C. The final mixture is stirred at room temperature under a nitrogen atmosphere overnight. The mixture is combined with 200 mL 1N HCl and shaken, after which the resultant precipitate is collected by suction filtration. The precipitate is recrystallized from methanol/2N HCl, m.p. 188°-189° C. as N-(4-carboxybenzyl)-(2-naphthoxy)acetamide.

المصدر