Tunable Regioselective Allylic Alkylation/Iodination of Imidazoheterocycles in Water
作者:Suvam Paul、Tathagata Choudhuri、Sourav Das、Ramendra Pratap、Avik Kumar Bagdi
DOI:10.1021/acs.joc.3c02091
日期:2024.2.2
the allylation of imidazoheterocycles using allylic alcohol in an aqueous medium. The allylation of a library of imidazoheterocycles and other electron-rich heterocycles like indole, pyrazole, 4-hydroxy coumarin, and 6-amino uracil has been achieved by employing this methodology. The efficiency of the I2 catalyst for N-allylation of azoles has also been demonstrated. Next, we have shown that this mixture
烯丙醇和分子碘作为试剂和催化剂的可转换作用已在使用烯丙醇-I 2混合物的咪唑杂环的区域选择性烯丙烷基化和碘化中得到证明。首先,我们探索了碘在水介质中使用烯丙醇烯丙基化咪唑杂环的催化活性。通过采用这种方法,已经实现了咪唑杂环和其他富电子杂环(例如吲哚、吡唑、4-羟基香豆素和6-氨基尿嘧啶)库的烯丙基化。 I 2催化剂对唑类N-烯丙基化的效率也得到了证实。接下来,我们证明了烯丙醇和 I 2的混合物可能有利于室温下咪唑杂环的碘化。机理研究表明,分子碘对烯丙醇的活化可能是通过卤素键发生的,核磁共振研究表明该反应不是通过烯丙醚形成进行的。