作者:Rajib Mandal、Basker Sundararaju
DOI:10.1021/acs.orglett.7b00801
日期:2017.5.19
A new procedure for oxidative coupling of aromatic and acrylic acids with alkynes has been developed using abundant, nontoxic, and air stable Cp*Co(III) catalyst. The coupling involves initial cyclometalation via weak chelation-assisted C–H bond activation followed by alkyne coordination, insertion, and reductive elimination leading to diverse isocoumarins (α-pyranones) in good yields under mild conditions
使用大量,无毒且空气稳定的Cp * Co(III)催化剂,已经开发出一种新的芳烃和丙烯酸与炔烃氧化偶合的方法。偶联涉及通过弱螯合辅助的C–H键活化进行初始环金属化,然后进行炔烃配位,插入和还原消除,从而在温和条件下以高收率得到各种异香豆素(α-吡喃酮)。