Palladium-Mediated Tandem Isomerization–Methylenation of Allyl Alcohols: One-Pot Synthesis of 1,5-Diketones
作者:Shaikh Samser、Omkar Mohapatra、Priyabrata Biswal、Krishnan Venkatasubbaiah
DOI:10.1021/acs.joc.1c01861
日期:2021.10.1
A novel methodology for the synthesis of 1,5-diketones through a one-pot isomerization–methylenation of a variety of allylic alcohols has been established for the first time. This methodology utilizes commercially available palladium acetate and easily accessible BINOL phosphoric acid. Both isomerization of allylic alcohol and oxidation of methanol occurred through a single catalyst. The practical
首次建立了一种通过多种烯丙醇的单锅异构化-亚甲基化合成 1,5-二酮的新方法。该方法使用市售的醋酸钯和易于获取的 BINOL 磷酸。烯丙醇的异构化和甲醇的氧化都是通过单一催化剂发生的。该方法的实际效用已通过连续加成合成取代的吡啶来证明。机理研究表明,烯丙醇异构化为相应的酮,最终进行甲基化,生成 1,5-二酮,其中 H 2和 H 2 O 作为唯一的副产物。