A Novel and Efficient Method for the Synthesis of New Hydroxythioxanthone Derivatives
作者:Hashem Sharghi、Ali Beni
DOI:10.1055/s-2004-831253
日期:——
We describe the synthesis of some new hydroxythioxanthones by treatment of thiosalicylic acid (TSA) with various substituted phenols in the presence of Al2O3-CH3SO3H (AMA). Most of the reactions show high regioselectivity and produce thioxanthones in good yields.
Electrochemical Reduction of 1<i>H</i>‐Thioxanthene‐1,4,9‐trione and 3‐Methyl‐1<i>H</i>‐thioxanthene‐1,4,9‐trione – Representatives of a New Class of Heterocycles Related to Thioxanthenone
作者:Danila S. Odintsov、Irina A. Os'kina、Irina G. Irtegova、Leonid A. Shundrin
DOI:10.1002/ejoc.202300459
日期:2023.9
Electrochemical reduction of 1H-thioxanthene-1,4,9-triones, which are representatives of a new class of thioxanthone-like heterocycles, is a three-stage process leading to the formation of the corresponding long-lived radical anions, unstable dianions, and long-lived 1-oxy-4-hydroxy-1H-thioxanthene-9-one radical dianions, followed by the formation of 1,4-dihydroxy-1H-thioxantene-9-ones as the final
1 H -噻吨-1,4,9-三酮是一类新型噻吨酮类杂环的代表,其电化学还原是一个三阶段过程,导致形成相应的长寿命自由基阴离子、不稳定的二价阴离子,和长寿命的 1-氧基-4-羟基-1H-噻吨烯-9-酮自由基双阴离子,然后形成 1,4-二羟基-1H-噻吨烯-9-酮作为最终产品。