Oxidative Annulation of Arenecarboxylic and Acrylic Acids with Alkynes under Ambient Conditions Catalyzed by an Electron-Deficient Rhodium(III) Complex
作者:Eiji Kudo、Yu Shibata、Mutsumi Yamazaki、Koji Masutomi、Yuta Miyauchi、Miho Fukui、Haruki Sugiyama、Hidehiro Uekusa、Tetsuya Satoh、Masahiro Miura、Ken Tanaka
DOI:10.1002/chem.201603499
日期:2016.9.26
It has been established that an electron‐deficient CpE rhodium(III) complex catalyzes the oxidative [4+2] annulation of substituted arenecarboxylic and acrylic acids with alkynes under ambient conditions (at RT–40 °C, under air) without using excess amounts of substrates to produce the corresponding substituted isocoumarins and α‐pyrones in high yields. Minor modification of reaction conditions depending
已经确定,在环境条件下(RT–40°C,空气中),无需电子的Cp E铑(III)络合物可以催化炔烃与取代的芳烃羧酸和丙烯酸的氧化[4 + 2]环化反应,而无需过量使用量的底物,以高产率生产相应的取代的异香豆素和α-吡喃酮。根据炔烃的配位能力对反应条件进行较小的修饰就可以实现较高的效率。