反応 #81777

反応方程式

potassium carbonate

10-bromoundecanoic acid

THF

borane THF

→

10-bromo-undecan-1-ol

収率 88.0%

溶媒

EtOAc

反応条件

後処理

1. 1
   その他immersed in an ice/water bath
2. 2
   その他fitted with an addition funnel
3. 3
   workup.ADDITIONwas added to the stirred reaction mixture over a period of 45 minutes
4. 4
   workup.ADDITION3 hrs after the addition
5. 5
   その他the layers were separated
6. 6
   洗浄The organic phase was washed with water (250 ml) and brine (250 ml)
7. 7
   乾燥dried (Na2SO4)
8. 8
   ろ過filtered
9. 9
   その他evaporated in vacuo

実験手順

A flask containing 10-bromoundecanoic acid (25.0 g, 94.2 mmol) was charged with dry THF (250 ml), immersed in an ice/water bath and fitted with an addition funnel. The addition funnel was charged with borane- THF solution (1.0M, 113 ml, 113 mmol) which was added to the stirred reaction mixture over a period of 45 minutes. 3 hrs after the addition was completed, the reaction was poured into a stirred mixture of EtOAc (500 ml) and 10% aqueous potassium carbonate (300 ml). After vigorously stirring for 0.5 hr, the layers were separated. The organic phase was washed with water (250 ml) and brine (250 ml), dried (Na2SO4), filtered and evaporated in vacuo. Flash column chromatography (silica, 1:4; EtOAc:hexanes) provided 10-bromo-undecan-1-ol (20.8 g, 88% ).

出典