[O:1]1[CH2:5][C:4](=O)[CH2:3][C:2]1=[O:7].[CH3:8][C:9]1([NH:14][C:15]([NH2:17])=[O:16])[CH2:13][CH2:12][CH2:11][CH2:10]1>>[CH3:8][C:9]1([NH:14][C:15]([NH:17][C:4]2[CH2:5][O:1][C:2](=[O:7])[CH:3]=2)=[O:16])[CH2:13][CH2:12][CH2:11][CH2:10]1Using the procedure described in Example 2 using 3 gm of 2,4-furandione and 4 g of 1-methylcyclopentylurea there is obtained 3 g of 1-(1-methylcyclopentyl)-3-(2,5-dihydro-5-oxo-3-furyl)urea, m.p. 170°C. (decomposition).
読み込み中…