تفاعل #315079

معادلة التفاعل

(−)DIP-Chloride

1-(2′,4′-Dichloro-biphenyl-4-yl)hex-5-en-1-one

→

(S)-1-(2′,4′-Dichloro-biphenyl-4-yl)-hex-5-en-1-ol

المذيبات

ether

ether

—

Petrol

ظروف التفاعل

المعالجة

1. 1
   درجة الحرارةcooled in an ethanol/CO2 bath
2. 2
   workup.ADDITIONadded dropwise to the DIP solution
3. 3
   أخرىthe organic layer separated
4. 4
   workup.ADDITIONThe aqueous was diluted with water
5. 5
   استخلاصextracted with a further 50 mL petrol
6. 6
   أخرىdried
7. 7
   أخرىevaporated
8. 8
   أخرىto give a thick oil
9. 9
   أخرىto obtain a pure sample by column chromatography

الإجراء التجريبي

(−)DIP-Chloride (2.4 g) was dissolved in dry ether (10 mL) and cooled in an ethanol/CO2 bath. 1-(2′,4′-Dichloro-biphenyl-4-yl)hex-5-en-1-one (1 g) was dissolved in dry ether (5 mL) and added dropwise to the DIP solution. The mixture was allowed to warm to room temperature and stirred for 24 hours. Petrol (50 mL) was added and the organic layer separated. The aqueous was diluted with water and extracted with a further 50 mL petrol. The organics were combined, dried and evaporated to give a thick oil. It was not possible to obtain a pure sample by column chromatography, but no trace of starting material remained, as assessed by thin layer chromatography.

المصدر