2-甲酯基噻吩-3-重氮四氟硼酸盐的钯催化的松田-的Heck和Suzuki-Miyaura交叉偶联1进行到合成一系列在β位官能噻吩衍生物。使用乙酸钯[Pd(OAc)2 ],一种无配体的钯催化剂,无碱,在室温下,好氧条件下,反应时间短的情况下,可获得良好或优异的交叉偶联产物收率。重氮化和交叉偶联的序列也可以在一锅法中进行,从而避免了噻吩并重氮盐衍生物的分离。此外,2-甲氧基羰基苯并[ b ]噻吩-3-重氮四氟硼酸盐8 通过应用相同的Suzuki-Miyaura优化反应条件也可以有效地芳基化。
Gold catalysed Suzuki-Miyaura coupling of arenediazonium o-benzenedisulfonimides
作者:Margherita Barbero、Stefano Dughera
DOI:10.1016/j.tet.2018.08.018
日期:2018.9
Arenediazonium o-benzenedisulfonimides have been used as efficient electrophilic partners in Au(I) catalysed Suzuki coupling reactions. The synthetic protocol is general, easy and produced either biaryls or heteroaryl arenes in good yields (51 positive examples, average yield 80%). o-Benzenedisulfonimide was recovered at the end of the reactions and was reused to prepare the starting salts for further