[CH2:1]([O:5][N:6]=[C:7]([C:13]([CH3:15])=[O:14])[C:8]([O:10][CH2:11][CH3:12])=[O:9])[CH2:2][CH2:3][CH3:4].[Br:16]Br>>[Br:16][CH2:15][C:13](=[O:14])[C:7](=[N:6][O:5][CH2:1][CH2:2][CH2:3][CH3:4])[C:8]([O:10][CH2:11][CH3:12])=[O:9]76 g (0.35 mole) of ethyl 2-n-butoxyimino-acetoacetate and 18 ccs (0.35 mole) of bromine react analogously to Example 4, stage 2, to give 93 g of ethyl 4-bromo-2-n-butoxyimino-acetoacetate.
Wird geladen…