S-cyclization-demethylation-alkoxycarbonylation-reduction sequence promoted by the PdI2/KI catalytic system, occurring under relatively mild conditions (40 atm, 80 °C, 15 h). Benzothiophene-2-acetic esters are obtained in moderate to good yields (35–70%) starting from variously substituted substrates in combination with different alcohols as external nucleophiles (17 examples).
介绍了一种从简单的结构单元 [1-(2-(甲
硫基) 苯基)prop-2-yn-1-ols、
一氧化碳和醇)] 多组分合成
苯并噻吩衍
生物的催化羰基化方法。它基于PdI 2 /KI 催化系统促进的S -环化 - 去甲基化 - 烷氧基羰基化 - 还原序列,发生在相对温和的条件下(40 个大气压,80°C,15 小时)。
苯并噻吩-
2-乙酸酯以中等至良好的产率(35-70%)从各种取代的底物与作为外部亲核试剂的不同醇开始(17 个例子)获得。