Reactions of Diazoketones in the Presence of Metal Chelates. II. Reactions with Olefinic Compounds
作者:Matsuji Takebayashi、Toshikazu Ibata、Hideki Kohara、Kozaburo Ueda
DOI:10.1246/bcsj.42.2938
日期:1969.10
The reaction of α-diazoacetophenone with olefinic compounds, such as vinyl acetate, cis- and trans-stilbenes and cyclohexene, has been studied in the presence of bis(acetylacetonato)copper-(II). The reaction gave the corresponding cyclopropane derivatives, the addition products of benzoylcarbene to the double bond of olefinic compounds in good yields, accompanied by cis-and trans-dibenzoylethylenes, dibenzoylethane or dilactone. Addition of carbene was found to be stereospecific in the cases of cis- and trans-stilbenes. A mechanism has been advanced in which a ketocarbene-metal chelate complex is included as an intermediate of the reaction.
在双(乙酰丙酮)铜-(II)存在下,研究了α-重氮苯乙酮与烯属化合物(例如乙酸乙烯酯、顺式和反式二苯乙烯和环己烯)的反应。该反应以良好的收率得到相应的环丙烷衍生物、苯甲酰卡宾与烯属化合物双键的加成产物,以及顺式和反式二苯甲酰乙烯、二苯甲酰乙烷或双内酯。发现在顺式和反式二苯乙烯的情况下,卡宾的添加具有立体定向性。已经提出了一种机制,其中包含酮卡宾-金属螯合物作为反应中间体。