New rhodium(II) catalyzed synthesis of 1,4-dicarbonyl compounds from α-diazo ketones using vinyl ethers as two-carbon synthons
作者:Sengodagounder Muthusamy、Pandurangan Srinivasan
DOI:10.1016/j.tetlet.2006.06.111
日期:2006.8
afforded γ-ketoaldehydes or 1,4-diketones in a facile manner. In this process, oxycyclopropanes are formed as intermediates, and are subsequently ring opened in the presence of the rhodium(II) acetate catalyst to furnish the corresponding 1,4-dicarbonyl compounds. The scope of this protocol has been demonstrated with the synthesis of a serotonin antagonist.
乙酸铑(II)催化各种α-重氮酮与乙烯基醚的反应,可以轻松地得到γ-酮醛或1,4-二酮。在该方法中,形成氧环丙烷作为中间体,然后在乙酸铑(II)催化剂存在下将其开环以提供相应的1,4-二羰基化合物。血清素拮抗剂的合成证明了该方案的范围。