反応 #7935

反応方程式

9a-butyl-7-methoxy-4-(4-methoxymethoxy-phenyl)-1,2,9,9a-tetrahydro-3H-fluoren-3-one

HCl

→

9a-butyl-4-(4-hydroxy-phenyl)-7-methoxy-1,2,9,9a-tetrahydro-3H-fluoren-3-one

収率 108.6%

溶媒

EtOAc

methanol

反応条件

後処理

1. 1
   温度heated at 60° C. for two hours
2. 2
   温度cooled to room temperature
3. 3
   その他evaporated under vacuum
4. 4
   その他to leave a yellow semi-solid
5. 5
   洗浄washed with water and brine
6. 6
   乾燥dried over MgSO4
7. 7
   ろ過filtered
8. 8
   その他evaporated under vacuum

実験手順

A suspension of 9a-butyl-7-methoxy-4-(4-methoxymethoxy-phenyl)-1,2,9,9a-tetrahydro-3H-fluoren-3-one (813 mg, 2 mmol) in methanol (12 mL) was warmed in an oil bath at 60° C. and treated with aqueous 2N HCl (4 mL). The resulting mixture was stirred and heated at 60° C. for two hours, then cooled to room temperature and evaporated under vacuum to leave a yellow semi-solid. The residue was dissolved in EtOAc, washed with water and brine, dried over MgSO4, filtered, evaporated under vacuum, and stripped with toluene to afford 9a-butyl-4-(4-hydroxy-phenyl)-7-methoxy-1,2,9,9a-tetrahydro-3H-fluoren-3-one (787 mg, ca. 92% weight pure) as a yellow foam.

出典