TMS-Imidazole → (4aS,8aR)-5-[(R)-5-Trimethylsilanyloxy-1,5-dimethyl-hex-3-ynyl]-4a-methyl-1,2,3,4,4a,7,8,8a-octahydro-naphthalen-1-one

関与物質

反応手順

446 mg (1.55 mmol) of (4aS,8aR)-5-((R)-5-hydroxy-1,5-dimethyl-hex-3-ynyl)-4a-methyl-3,4,4a,7,8,8a-hexahydro-2H-naphthalen-1-one in 12 ml of abs. CH2Cl2 was treated with 2.03 ml (9 eq.) of TMS-imidazole and kept at RT for 24 h. Pouring onto crushed ice, twofold extraction with ether, washing with water and brine, and drying over sodium sulfate left a crude product, which was purified by flash chromatography (SiO2, hexane/AcOEt=9/1). Thereby, 561 mg of the title compound was obtained as colorless oil.

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