Metal-Free Synthesis of Benzimidazoles via Oxidative Cyclization of <scp>d</scp>-Glucose with <i>o</i>-Phenylenediamines in Water
作者:Dineshkumar Raja、Abigail Philips、Pushbaraj Palani、Wei-Yu Lin、Sundaramurthy Devikala、Gopal Chandru Senadi
DOI:10.1021/acs.joc.0c01053
日期:2020.9.4
d-Glucose has been identified as an efficient C1 synthon in the synthesis of benzimidazoles from o-phenylenediamines via an oxidative cyclization strategy. Isotopic studies with 13C6-d-glucose and D2O unambiguously confirmed the source of methine. The notable features of this method include the following: broad functional group tolerance, a biorenewable methine source, excellent reaction yields, a
d-葡萄糖已被确定为通过氧化环化策略由邻苯二胺合成苯并咪唑的有效C1合成子。用13 C 6 - d-葡萄糖和D 2 O进行的同位素研究明确证实了次甲基的来源。该方法的显着特征包括:宽泛的官能团耐受性,可生物再生的次甲基来源,优异的反应收率,较短的反应时间,水作为环境友好的溶剂以及以克为单位的维生素B 12组分的合成。