반응 #83850

반응 방정식

6-fluoro-3-(4-piperidinyl)-1,2-benzisoxazole hydrochloride

K2CO3

1-[4-(4-bromobutoxy)-3-methoxyphenyl]ethanone

dimethylformamide

→

product

수율 87.4%

1-[4-[4-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]butoxy]-3-methoxyphenyl]ethanone

수율 87.4%

용매

water

반응 조건

후처리

1. 1
   추출the aqueous mixture was extracted with ethyl acetate
2. 2
   세척The ethyl acetate was washed (water)
3. 3
   건조dried (MgSO4)
4. 4
   농축the solvent was concentrated
5. 5
   기타to yield initially an oil, which
6. 6
   기타The solid was triturated with hexane
7. 7
   기타collected

실험 절차

A stirred mixture of 6-fluoro-3-(4-piperidinyl)-1,2-benzisoxazole hydrochloride (5.1 g, 0.02 mol), K2CO3 (5.2 g, 0.04 mol), 1-[4-(4-bromobutoxy)-3-methoxyphenyl]ethanone (6.6 g,: 22 mmol), and dimethylformamide (60 ml) was heated at 75° C. for 5 hours. The reaction was poured into water, and the aqueous mixture was extracted with ethyl acetate. The ethyl acetate was washed (water), dried (MgSO4), and the solvent was concentrated to yield initially an oil, which solidified upon standing. The solid was triturated with hexane and collected to afford 7.7 g of the product as a waxy solid. The compound was chromatographed on a Waters Prep 500 utilizing silica gel columns and eluting with dichloromethane/methanol (5%). Concentration of the appropriate fractions yielded 5.1 g of off-white solid 1-[4-[4-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]-butoxy]-3-methoxyphenyl]ethanone, which when recrystallized from ethyl alcohol yielded 3.2 g (36%) of feathery-white needles, m.p.=88°-90° C.

출처