Pd(0)-Catalyzed Conjugate Addition of Benzylzinc Chlorides to α,β-Enones in an Atmosphere of Carbon Monoxide: Preparation of 1,4-Diketones
作者:Motoki Yuguchi、Masao Tokuda、Kazuhiko Orito
DOI:10.1021/jo035468+
日期:2004.2.1
Pd(0)-catalyzed conjugate addition of benzylzinc chloride to methyl vinyl ketone in the presence of chlorotrimethylsilane and lithium chloride in an atmosphere of carbon monoxide at room temperature afforded 1-phenyl-2,5-hexanedione monosilyl enol ether. In this catalytic carbonylation, four components are connected in one reaction. Successive acidic workup generated a variety of 1,4-diketones from
在氯三甲基硅烷和氯化锂的存在下,在一氧化碳气氛下,在室温下,通过Pd(0)催化的苄基氯化锌与甲基乙烯基酮的共轭加成反应,得到1-苯基-2,5-己二酮单甲硅烷基烯醇醚。在该催化羰基化中,四个组分在一个反应中连接。连续的酸性处理从取代的苄基锌氯化物或相关化合物和α,β-烯酮中产生了各种1,4-二酮。一些产物被转化为环戊烯酮或含有N,O或S原子的五元杂环化合物。