A novel, efficient, mild, and inexpensive photocatalytic approach has been established for the visible-light-initiated oxidative coupling of indole and activemethylenecompounds using atmospheric air and water as an oxidant in the presence of Eosin Y to give 3-methyleneindolin-2-ones. In this work, only one molecule of malononitrile, ethyl acetoacetate, or dimedone reacts with one molecule of indole
已经建立了一种新颖、高效、温和且廉价的光催化方法,用于在 Eosin Y 存在下使用大气和水作为氧化剂,在可见光下引发吲哚和活性亚甲基化合物的氧化偶联,得到 3-methyleneindolin-2 -那些。在这项工作中,只有一分子丙二腈、乙酰乙酸乙酯或二甲酮与一分子吲哚反应,但相反,两分子巴比妥酸与一分子吲哚反应。该方法的基本特征是无金属反应、产物收率高、无副产物和使用可再生能源。
Riyaz; Indrasena; Naidu, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2014, vol. 53, # 1, p. 120 - 123