Rhodium-Catalyzed Selective C(<i>sp</i><sup>2</sup>)–H Activation/Annulation of <i>tert</i>-Butyl Benzoyloxycarbamates with 1,3-Diynes: A One Step Access to Alkynylated Isocoumarins and Bis-Isocoumarins
作者:Bedadyuti Vedvyas Pati、Shyam Kumar Banjare、Gopal Krushna Das Adhikari、Tanmayee Nanda、Ponneri C. Ravikumar
DOI:10.1021/acs.orglett.2c01901
日期:2022.8.12
and stereoselective synthesis of alkynylated and bis-isocoumarin from 1,3-dialkyne. Exclusive one-pot formation of 3,3-bis-isocoumarin isomers has been achieved by eliminating several other possibilities. This is the first example of transition metal catalyzed synthesis of alkynylated and bis-isocoumarin scaffolds. The protocol is compatible with a wide range of functional groups affording good to excellent
我们在此报告从 1,3-二炔烃催化的炔基化和双异香豆素的区域选择性和立体选择性合成。通过消除其他几种可能性,已经实现了 3,3-双-异香豆素异构体的独家一锅法形成。这是过渡金属催化合成炔基化和双异香豆素支架的第一个例子。该协议与广泛的功能组兼容,可提供良好的产量。已经进行了一些机械研究,包括氘标记实验和动力学同位素效应研究。