Реакция #7938

Уравнение реакции

2-propanethiol

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

AlCl3

HCl

→

9a-BUTYL-7-HYDROXY-4-(4-HYDROXYPHENYL)-1,2,9,9a-TETRAHYDRO-3H-FLUOREN-3-ONE

Растворители

CH2Cl2

EtOAc

Условия реакции

Обработка

1. 1
   Другоеcontained in an ice cooled flask
2. 2
   workup.STIRRINGThe resulting mixture was stirred at 0° C. for 5 minutes and at room temperature for 3.25 hours
3. 3
   workup.STIRRINGstirred for 15 minutes at room temperature
4. 4
   ДругоеThe EtOAc layer was separated
5. 5
   Промывкаwashed with 1N HCl and brine
6. 6
   Сушкаdried over MgSO4
7. 7
   Фильтрацияfiltered
8. 8
   Другоеevaporated under vacuum
9. 9
   Другоеto give a yellow gum
10. 10
    ДругоеThis material was triturated with benzene
11. 11
    Другоеto give
12. 12
    Фильтрацияafter filtration
13. 13
    Сушкаdrying under vacuum, 9a-butyl-7-hydroxy-4-(4-hydroxyphenyl)-1,2,9,9a-tetrahydro-3H-fluoren-3-one as an off-white solid

Методика

An ice-cold solution of 9a-butyl-4-(4-hydroxy-phenyl)-7-methoxy-1,2,9,9a-tetrahydro-3H-fluoren-3-one (29 mg, 0.08 mmol) in anhydrous CH2Cl2 (1 mL) was added to AlCl3 (96 mg, 0.72 mmol) contained in an ice cooled flask. The mixture was stirred at 0° C. under a nitrogen atmosphere and treated with 2-propanethiol (0.056 mL, 0.6 mmol). The resulting mixture was stirred at 0° C. for 5 minutes and at room temperature for 3.25 hours, then treated with ice (approx. 2 mL), 2N HCl (2 mL) and EtOAc (4 mL) and stirred for 15 minutes at room temperature. The EtOAc layer was separated, washed with 1N HCl and brine, dried over MgSO4, filtered, and evaporated under vacuum to give a yellow gum. This material was triturated with benzene to give, after filtration and drying under vacuum, 9a-butyl-7-hydroxy-4-(4-hydroxyphenyl)-1,2,9,9a-tetrahydro-3H-fluoren-3-one as an off-white solid.

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