Palladium-Catalyzed Synthesis of 2,3-Disubstituted Benzofurans: An Approach Towards the Synthesis of Deuterium Labeled Compounds
作者:Soumitra Agasti、Soham Maity、Kalman J. Szabo、Debabrata Maiti
DOI:10.1002/adsc.201500308
日期:2015.7.6
Palladium‐catalyzed oxidative annulations between phenols and alkenylcarboxylic acids produced a library of benzofuran compounds. Depending on the nature of the substitution of the phenol precursor, either 2,3‐dialkylbenzofurans or 2‐alkyl‐3‐methylene‐2,3‐dihydrobenzofurans can be synthesized with excellent regioselectivity. Reactions between conjugated 5‐phenylpenta‐2,4‐dienoic acids and phenol gave
钯催化的酚和烯基羧酸之间的氧化环化产生了苯并呋喃化合物库。根据苯酚前体取代的性质,可以合成具有优异区域选择性的2,3-二烷基苯并呋喃或2-烷基-3-亚甲基-2,3-二氢苯并呋喃。共轭5-苯基五-2,4-二烯酸和苯酚之间的反应产生3-亚烷基二氢苯并呋喃生物碱基序,而生物活性的7-芳基苯并呋喃衍生物是从2-苯基苯酚开始制备的。更有趣的是,我们发现从 D 2 O中选择性掺入氘,这提供了一种有吸引力的一步法来获取氘代化合物。