Synthesis of New Functionally Substituted Indenes, Benzofurans, and 2,5-Benzodiazocin-1(2H)-ones
作者:A. V. Velikorodov、N. N. Stepkina、V. P. Osipova、A. S. Zukhairaeva、E. A. Shustova
DOI:10.1134/s1070428021040114
日期:2021.4
The synthesis of new functionally substituted 1H-indene-1,3(2H)-diones, indenobenzofurans, and 2,5-benzodiazocines is described. The condensations of ninhydrin in concentrated sulfuric acid with 2-(morpholin-4-yl)ethyl and 2-(pyridin-2-yl)ethyl phenylcarbamates at 20°C and with 2,6-di-tert-butylphenol while gradually raising the temperature from 0 to 20°C gave the corresponding 2,2-disubstituted 1H-indene-1
描述了新的功能取代的 1H-indene-1,3(2H)-diones、茚并呋喃和 2,5-benzodiazocines 的合成。茚三酮在浓硫酸中与 2-(吗啉-4-基)乙基和 2-(吡啶-2-基)乙基苯基氨基甲酸酯在 20°C 和 2,6-二叔丁基苯酚缩合,同时逐渐升高温度从 0 到 20°C 得到相应的 2,2-二取代 1H-茚-1,3(2H)-二酮,产率为 62-89%。6-(1-Adamantyl)-4b,9b-dihydroxy-8-methyl-4b,9b-dihydro-10H-indeno[1,2-b]benzofuran-10-one 和 6,3-di(tert-butyl)通过将茚三酮与 2-(1 -金刚烷基)-4-甲基苯酚和 2,4-二(叔丁基)苯酚,分别在 60°C 的冰醋酸中。苯并呋喃含有金刚烷基、叔丁基、