derivatives of these β-polyketide analogues appears to be the results of a direct C-alkylation, and is a significant characteristic of the copper chelate reactions, which has not been observed previously with other alkylation reactions of β-diketones or β-keto-esters.
乙酰丙酮和
乙酰乙酸甲酯的
铜(II)螯合物被3,3-二甲基烯丙基卤化物烷基化,得到3,3-二甲基烯丙基和1,1-二甲基烯丙基产物。这些β-聚酮化合物类似物的
1,1-二甲基烯丙基衍
生物的形成似乎是直接C-烷基化的结果,并且是
铜螯合反应的显着特征,这是以前在β-聚酮的其他烷基化反应中未曾观察到的。二酮或β-
酮酸酯。