Replacement of only one hydrogen of the methylene group of 2,4-pentanedione (1) (acetylacetone) can be obtained by conversion of copper(II) acetylacetonate (2) with peroxydicarbonates 6 whereas dibenzoyl peroxide (3) (DBPO) leads to geminal disubstitution.
过氧化二
碳酸铜(II)
乙酰丙酮(2)与过氧化二
碳酸铜(II)
乙酰丙酮(2)的转化过程中,
2,4-戊二酮(1)(
乙酰丙酮)的亚甲基中只有一个氢被置换,而过氧化二苯甲酰基(3)(
DBPO)则会导致基端二置换。