反应详情

420 mg of (4aS,8aR)-5-((3E,5E)-(R)-7-hydroxy-1,7-dimethyl-octa-3,5-dienyl)-4a-methyl-3,4,4a,7,8,8a-hexahydro-2H-naphthalen-1-one were reacted at RT with 0.389 ml of TMS-imidazole (2 equivalents) in 1.3 ml of CH2Cl2. After 20 hours the mixture was poured onto crushed ice, extracted with ether, washed with brine, dried over magnesium sulfate and evaporated to dryness. Flash chromatography (SiO2, hexane/AcOEt=95/5) yielded 463 mg of (4aS,8aR)-5-[(3E,5E)-(R)-(1,7-dimethyl-7-trimethylsilanyloxy-octa-3,5-dienyl)]-4a-methyl-3,4,4a,7,8,8a-hexahydro-2H-naphthalen-1-one as colourless oil.

1. additionAfter 20 hours the mixture was poured
2. customonto crushed ice
3. extractionextracted with ether
4. washwashed with brine
5. dry with materialdried over magnesium sulfate
6. customevaporated to dryness