Cyrene as a bio-based solvent for HATU mediated amide coupling
作者:Kirsty L. Wilson、Jane Murray、Craig Jamieson、Allan J. B. Watson
DOI:10.1039/c8ob00653a
日期:——
Amide bonds are one of the underpinning linkages in all living systems and are fundamental within drug discovery. Current methods towards their synthesis frequently rely on the use of dipolar aprotic solvents; however, due to increasingly stringent regulations and growing societal pressures, safe and more sustainable alternatives are highly sought after. Herein, we evaluate the application of the bio-based
Directed Iridium‐Catalyzed Hydrogen Isotope Exchange Reactions of Phenylacetic Acid Esters and Amides
作者:Mégane Valero、Daniel Becker、Kristof Jess、Remo Weck、Jens Atzrodt、Thomas Bannenberg、Volker Derdau、Matthias Tamm
DOI:10.1002/chem.201901449
日期:2019.5.7
very mild reaction conditions is reported. Using a homogeneous iridium catalyst supported by a bidentate phosphine‐imidazolin‐2‐imine P,N ligand, the HIE reaction on a series of phenylacetic acid derivatives proceeds with high yields, high selectivity, and with deuterium incorporation up to 99 %. The method is fully adaptable to the specific requirements of tritium chemistry, and its effectiveness was
Selective C-N σ Bond Cleavage in Azetidinyl Amides under Transition Metal-Free Conditions
作者:Hengzhao Li、Zemin Lai、Adila Adijiang、Hongye Zhao、Jie An
DOI:10.3390/molecules24030459
日期:——
electride derived from sodium dispersions and 15-crown-5. Of note, less strained cyclic amides and acyclic amides are stable under the reaction conditions, which features the excellent chemoselectivity of the reaction. This method is amenable to a range of unhindered and sterically encumbered azetidinyl amides.