Rhodium-Catalyzed C–O Bond Alkynylation of Aryl Carbamates with Propargyl Alcohols
作者:Kosuke Yasui、Naoto Chatani、Mamoru Tobisu
DOI:10.1021/acs.orglett.8b00674
日期:2018.4.6
The rhodium-catalyzedalkynylation of aryl carbamates with propargyl alcohols is described. This methodology can provide aryl acetylenes from aryl carbamates via C–O bond activation. The use of propargyl alcohols as alkynylating agents allows the use of a variety of functional groups that are incompatible with organometallic nucleophiles. This reaction also serves to broaden the utility of a carbamate
Sterically Controlled Late-Stage C–H Alkynylation of Arenes
作者:Arup Mondal、Hao Chen、Lea Flämig、Philipp Wedi、Manuel van Gemmeren
DOI:10.1021/jacs.9b10868
日期:2019.11.27
Phenylacetylenes are key structural motifs in organic chemistry, which find widespread applications in bioactive molecules, synthetic intermediates, functional materials and reagents. These molecules are typically prepared from pre-functionalized starting materials, e.g. using the Sonogashiracoupling, or using directing group-based C-H activation strategies. While highly efficient, these approaches