作者:Manuel van Gemmeren、Carlos Santiago、Hao Chen、Arup Mondal
DOI:10.1055/s-0040-1706014
日期:2022.3
for the late-stage olefination of arenes. Building upon a method previously developed for simple arenes, a variety of complexarene substrates were functionalized. Importantly, the method uses the arene as a limiting reactant and is therefore suitable for valuable starting materials that cannot be used in excess. The regioselectivity of the transformation is controlled by the steric and electronic properties
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
Palladium-Catalyzed Nondirected Late-Stage C–H Deuteration of Arenes
作者:Mirxan Farizyan、Arup Mondal、Sourjya Mal、Fritz Deufel、Manuel van Gemmeren
DOI:10.1021/jacs.1c08233
日期:2021.10.13
We describe a palladium-catalyzed nondirected late-stage deuteration of arenes. Key aspects include the use of D2O as a convenient and easily available deuterium source and the discovery of highly active N,N-bidentate ligands containing an N-acylsulfonamide group. The reported protocol enables high degrees of deuterium incorporation via a reversible C–Hactivation step and features extraordinary functional