作者:Giovanni Palmisano、Bruno Danieli、Giordano Lesma、Giorgio Fiori
DOI:10.1055/s-1987-27862
日期:——
Regioselective halogenation (chlorination, bromination, iodination) of several ergolines to the corresponding 2-halo derivatives was performed in moderate to good yields by potential controlled electrolysis at platinum in acetonitrile in the presence of tetrabutylammonium halide and lithium perchlorate. Alternatively, ergolines underwent a facile iodination in excellent yields by exposure to an anodically oxidized solution of iodine in acetonitrile.
在四丁基卤化铵和高氯酸锂的存在下,通过在乙腈中在铂上进行电位控制电解,对几种麦角林进行了区域选择性卤化(氯化、溴化、碘化),生成了相应的 2-卤衍生物,收率为中等到良好。另外,将麦角林暴露于乙腈中碘的阳极氧化溶液中,也能以极好的收率进行简单的碘化反应。