반응 #5067

반응 방정식

1-benzylpiperid-4-one

butyllithium

5-bromo-1,4-benzodioxane

water

→

1-Benzyl-4-hydroxy-4-(1,4-benzodioxan-5-yl)piperidine

용매

tetrahydrofuran

hexane

tetrahydrofuran

반응 조건

후처리

1. 1
   workup.ADDITIONWhen the addition
2. 2
   workup.STIRRINGThe mixture is stirred for 2 hours at -40° C.
3. 3
   workup.WAITfor 2 hours at ambient temperature before hydrolyzing using

실험 절차

23.3 ml of a 1.6M solution of butyllithium in hexane are added dropwise to a solution, previously cooled to -60° C., of 8 g of 5-bromo-1,4-benzodioxane in 400 ml of tetrahydrofuran. When the addition is complete, the mixture is stirred at -60° C. for 5 minutes and a solution of 8 g of 1-benzylpiperid-4-one in 100 ml of tetrahydrofuran is then added dropwise. The mixture is stirred for 2 hours at -40° C. and then for 2 hours at ambient temperature before hydrolyzing using 80 ml of water.

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