تفاعل #1197360

معادلة التفاعل

tetra n-butylammonium fluoride

ether

2-(1-methylethyl)-5,9,13-trimethyl-1-trimethylsiloxy-2,4,8,12-cyclotetradecatetraen-1-carbonitrile

→

2-(1-methylethyl)-5,9,13-trimethyl-2,4,8,12-cyclotetradecatetraen-1-one

المردود 85.0%

المذيبات

tetrahydrofuran

tetrahydrofuran

ظروف التفاعل

المعالجة

1. 1
   أخرىMost of the tetrahydrofuran was removed in vacuo
2. 2
   workup.DISSOLUTIONthe residue was dissolved in ethyl ether
3. 3
   تجفيفThe ether layer was dried over MgSO4
4. 4
   ترشيحfiltered
5. 5
   تركيزconcentrated

الإجراء التجريبي

The above cyanohydrine trimethylsily ether compound, 2-(1-methylethyl)-5,9,13-trimethyl-1-trimethylsiloxy-2,4,8,12-cyclotetradecatetraen-1-carbonitrile (657 mg, 1.7 mmol) was dissolved in 10% aqueous tetrahydrofuran (10 ml). To the solution on an ice-water bath was added a solution of 1M tetra n-butylammonium fluoride in tetrahydrofuran (0.02 ml), and the mixture was stirred and then allowed to stand at room temperature for 2 days. Most of the tetrahydrofuran was removed in vacuo and the residue was dissolved in ethyl ether. The ether layer was dried over MgSO4, filtered, concentrated, and subjected to silica gel column chromatography (solvent: n-hexane/ethyl acetate=30:1) to obtain the ketone compound, 2-(1-methylethyl)-5,9,13-trimethyl-2,4,8,12-cyclotetradecatetraen-1-one (411 mg, 85%).

المصدر