作者:Satish P. Nikumbh、Akula Raghunadh、T. Srinivasa Rao、V. Narayana Murthy、Suju C. Joseph、Y. L. N. Murthy、Manojit Pal
DOI:10.1039/c6ra03556f
日期:——
7H-indolo[3′,2′:4,5]furo[2,3-b]quinoxaline derivatives are synthesized directly from methyl 2-(2-chloro-1H-indol-3-yl)-2-oxoacetate or its N-alkyl derivatives under neutral or mildly acidic conditions. This new one-pot methodology was found to be general and greener as it avoids the use of environmentally harmful POCl3 and strong alkali required for the previously reported method. It is also amenable for scale-up
7 H-吲哚并[3',2':4,5]呋喃[2,3- b ]喹喔啉衍生物是直接由甲基2-(2-氯-1 H-吲哚-3-基)-2-合成的在中性或中度酸性条件下的氧代乙酸酯或其N-烷基衍生物。发现这种新的一锅法是通用且更绿色的方法,因为它避免了使用先前报道的方法所需的对环境有害的POCl 3和强碱。它也适合扩大规模。