反応式
[OH:1][CH2:2][CH2:3][CH:4]1[CH2:9][CH2:8][C:7](=[O:10])[CH2:6][CH2:5]1.C(N(C(C)C)CC)(C)C.FC(F)(F)S(O[Si:26]([CH:33]([CH3:35])[CH3:34])([CH:30]([CH3:32])[CH3:31])[CH:27]([CH3:29])[CH3:28])(=O)=O>C(Cl)Cl>[CH:27]([Si:26]([CH:33]([CH3:35])[CH3:34])([CH:30]([CH3:32])[CH3:31])[O:1][CH2:2][CH2:3][CH:4]1[CH2:9][CH2:8][C:7](=[O:10])[CH2:6][CH2:5]1)([CH3:29])[CH3:28]参加物
反応条件
- 温度
- 0 °C
実験手順
A solution of 4-(2-hydroxy-ethyl)-cyclohexanone (Intermediate R10, 6.8 g, 52.6 mmol, (obtainable as described in the publication by Ciufolini et. al. J. Amer. Chem. Soc. 1991, 113, 8016) was dissolved in CH2Cl2 (75 mL) and treated with diisopropylethylamine (9.2 mL, 52.6 mmol) followed by tri-isopropylsilyl trifluoromethane sulfonate (TIPSTf) (15.3 g, 50.2 mmol) at −30° C. The reaction mixture was warmed to 0° C. for 1 h. The mixture was subjected to an aqueous work-up and purified by chromatography on SiO2 to give 4-(2-triisopropylsilanyloxy-ethyl)-cyclohexanone (Intermediate R11, 11.8 g (82%). Intermediate R11 was converted via Intermediate R12 to the unsaturated aldehyde, 5-(2-triisopropylsilanyloxy-ethyl)-cyclohex-1-enecarbaldehyde (Intermediate R13)
後処理
- custompurified by chromatography on SiO2
出典と根拠
- ORDレコード
- ord-cbb4a56e9ade4183acb257439426d48b
- 出典データセット
- uspto-grants-2011_12
- 特許番号
- US08071635B2
関連ノート
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