تفاعل #216964

معادلة التفاعل

(E,E)-farnesol

PBr3

→

bromide

(E,E)-3,7,11,-Trimethyl-2,6,10-dodecatrienyl bromide

المذيبات

ether

diethyl ether

ظروف التفاعل

المعالجة

1. 1
   أخرىquenched with water
2. 2
   أخرىseparated
3. 3
   غسيلThe organic phase was washed with 5 mL of H2O, 5 mL of saturated NaHCO3, and 5 mL of brine
4. 4
   تجفيفdried over Na2SO4
5. 5
   أخرىevaporated

الإجراء التجريبي

A solution of 1.00 g (4.5 mmol) of (E,E)-farnesol (Aldrich, further purified by flash chromatography) in 10 mL of distilled ether at 0° C. under argon in the dark was treated dropwise with a solution of 195 μL (2.05 mmol, 0.45 eq.) of PBr3 in 2 mL of diethyl ether (ether). The resultant mixture was stirred at 0° C. for one hour, then quenched with water and separated. The organic phase was washed with 5 mL of H2O, 5 mL of saturated NaHCO3, and 5 mL of brine, dried over Na2SO4 and evaporated to give 1.26 g (98%) of crude bromide as a clear oil.

المصدر