تفاعل #76825

معادلة التفاعل

hydrochloric acid

aluminum isopropoxide

2-bromobenzaldehyde

(2E,6E)-3,7,11-Trimethyl-2,6,10-dodecatrien-1-ol

→

title compound

المردود 96.0%

(2E,6E)-3,7,11-trimethyl-2,6,10-dodecatrien-1-al

المردود 96.0%

المذيبات

hexane

cyclohexane

ظروف التفاعل

المعالجة

1. 1
   استخلاصextracted twice with ethyl acetate
2. 2
   غسيلSubsequently, the organic layer was washed with saturated brine
3. 3
   تجفيفdried over magnesium sulfate
4. 4
   أخرىThe solvent was evaporated in vacuo
5. 5
   أخرىthe residue was purified by silica gel column chromatography (hexane:ethyl acetate=9:1)

الإجراء التجريبي

(2E,6E)-3,7,11-Trimethyl-2,6,10-dodecatrien-1-ol (266 mg, 1.2 mmol) was dissolved in cyclohexane (1 mL), added with aluminum isopropoxide (24.5 mg, 0.1 eq, 0.12 mmol) and 2-bromobenzaldehyde (289 mg, 1.3 eq, 1.56 mmol) and stirred at room temperature for 1.5 hours. The reaction mixture was added with hexane, then made acidic with addition of 1 N hydrochloric acid and extracted twice with ethyl acetate. Subsequently, the organic layer was washed with saturated brine and dried over magnesium sulfate. The solvent was evaporated in vacuo, and the residue was purified by silica gel column chromatography (hexane:ethyl acetate=9:1) to obtain 256 mg (yield: 96%, E:Z=99:1) of the title compound as yellow oil.

المصدر