Reacción #12060

Ecuación de reacción

benzyl magnesium chloride

2-bromo-indene

→

2-benzylindene

Disolventes

ether

diethyl ether

—

hexanes

Condiciones de reacción

Tratamiento posterior

1. 1
   TemperaturaThe reaction was heated
2. 2
   Temperaturato reflux overnight
3. 3
   Otroquenched
4. 4
   workup.ADDITIONadding 150 mL of 1.0 M aqueous hydrochloric acid
5. 5
   OtroThe organic layer was separated
6. 6
   Lavadowashed twice with 50 mL of ether
7. 7
   Secadodried over magnesium sulfate
8. 8
   Filtraciónfiltered
9. 9
   Otrothe volatiles removed in vacuo
10. 10
    Otroto leave a dark oil
11. 11
    Otropurified by flash column chromatography

Procedimiento

A 500 mL 3 neck flask was charged with 2.5 g (13 mmol) of 2-bromo-indene, 50 mg of NiCl2(1,3-bis(diphenylphosphino)propane) (0.06 mmol) and 150 mL of diethyl ether. To this mixture was added dropwise 12.8 mL of 1.0 M benzyl magnesium chloride in ether (12.8 mmol). The reaction was heated to reflux overnight and then quenched by cooling to 0° C. and adding 150 mL of 1.0 M aqueous hydrochloric acid. The organic layer was separated and washed twice with 50 mL of ether. The organic extracts were combined, dried over magnesium sulfate, filtered and the volatiles removed in vacuo to leave a dark oil. The sample was dissolved in a small amount of hexanes and purified by flash column chromatography using silica and hexanes as the elutent. Yield: 1.75 g, 66 percent

Fuente