Synthesis of Isocoumarin Derivatives by Copper-Catalyzed Addition of <i>o</i>-Halobenzoic Acids to Active Internal Alkynes
作者:Xun-Xiang Guo
DOI:10.1021/jo302499k
日期:2013.2.15
The addition of o-halobenzoic acids to active internal alkynes proceeds efficiently in the presence of CuCl2 as a catalyst to give the corresponding isocoumarin derivatives in moderate to good yields. This strategy offers a simple, efficient route to synthesis of the isocoumarin derivatives.
[bmIm]OH catalyzed hetero-cyclisation of o-halobenzoic acid and alkyne: A green approach to synthesize isocoumarins
作者:Malik A. Waseem、Shireen、Afaf A. Abumahdi、Arjita Srivastava、Anjali Srivastava、Rahila、I.R. Siddiqui
DOI:10.1016/j.catcom.2014.06.010
日期:2014.10
Efficient and environmentally benign heterocyclization of o-halobenzoic acid and alkyne has been developed using [bmIm]OH as green catalyst. This methodology offers a metal and base free approach and is endowed with mild reaction conditions, high yields and better functional group tolerating ability. The recyclability and reuse of [bmIm]OH add the methodology a wide scope. (C) 2014 Elsevier B.V. All rights reserved.