CON(C)[C:4]([C@@H:6]1[CH2:10][CH2:9][CH2:8][O:7]1)=[O:5].[CH3:12][C@@H:13]1C[C@H:14]1C(=O)CC=C>>[O:7]1[CH2:8][CH2:9][CH2:10][C@H:6]1[C:4](=[O:5])[CH2:14][CH:13]=[CH2:12](2S)—N-Methoxy-N-methyltetrahydrofuran-2-carboxamide (C92) was converted to the product using the method described for the synthesis of 1-[(1R,2R)-2-methylcyclopropyl]but-3-en-1-one (C80) in Example 20. The resulting product was used in the next step without further purification. Yield: 19 g, ≦0.14 mol, ≦87%.
読み込み中…