Widely Exploited, Yet Unreported: Regiocontrolled Synthesis and the Suzuki-Miyaura Reactions of Bromooxazole Building Blocks
作者:Vitalii V. Solomin、Dmytro S. Radchenko、Evgeniy Y. Slobodyanyuk、Oleksandr V. Geraschenko、Bohdan V. Vashchenko、Oleksandr O. Grygorenko
DOI:10.1002/ejoc.201900032
日期:2019.5.15
An approach to synthesis of all isomeric bromooxazoles was optimized and its scope was extended to all three isomeric parents, as well as various alkyl‐ and aryl‐substituted bromooxazoles. The direct regiocontrolled lithiation followed by reaction with electrophilic bromine source was common and led exclusively to the target substituted 2‐, 4‐, and 5‐bromooxazoles on multigram scale. The utility of
Access to Unexplored 3D Chemical Space:
<i>cis</i>
‐Selective Arene Hydrogenation for the Synthesis of Saturated Cyclic Boronic Acids
作者:Akash Kaithal、Tobias Wagener、Peter Bellotti、Constantin G. Daniliuc、Lisa Schlichter、Frank Glorius
DOI:10.1002/anie.202206687
日期:2022.8.8
and unexplored saturatedcyclic boronic acids were synthesized using an arene hydrogenation methodology. Rhodium-catalyzed cis-selective hydrogenation of biologically important molecules comprising benzoxaborole, benzoxaborinin, and benzoxaboripin-derivatives is reported. The utility of the synthesized molecules was shown by their high tendency to form intermolecular hydrogenbonding and molecular recognition
The catalytic atroposelectivesynthesis of axiallychiral heterobiaryls was first developed through the direct one-step dynamic kinetic condensation reaction with the simple transformation of the C═O bond to the C═N bond, delivering a series of novel axiallychiral heterobiaryl oxime ethers.