Cornforth reagent → 2-(5-Oxohept-1-yl)bicyclo[3.3.0]octan-7-one
反応式
[OH:1][CH:2]([CH2:16][CH3:17])[CH2:3][CH2:4][CH2:5][CH2:6][CH:7]1[CH2:14][CH2:13][CH:12]2[CH:8]1[CH2:9][C:10](=[O:15])[CH2:11]2.[Cr](O[Cr]([O-])(=O)=O)([O-])(=O)=O.[NH+]1C=CC=CC=1.[NH+]1C=CC=CC=1>C(Cl)Cl>[O:1]=[C:2]([CH2:16][CH3:17])[CH2:3][CH2:4][CH2:5][CH2:6][CH:7]1[CH2:14][CH2:13][CH:12]2[CH:8]1[CH2:9][C:10](=[O:15])[CH2:11]2参加物
4
実験手順
The procedure followed is the same as that described in Example 13 substituting the starting material from Example 3, 2-(5-hydroxyhept-1-yl)bicyclo[3.3.0]octan-7-one {hexahydro-4-(5-hydroxyheptyl)-2(1H)-pentalenone} (2.0 g, 8.4 mmoles) and pyridinium dichromate (4.7 g, 12.6 mmoles) in methylene chloride (10 ml). The crude product is chromatographed on silica gel and subsequently kugelrohred under vacuum leaving a clear, colorless oil (1.7 g, 7.1 mmoles).