Nickel-Catalyzed Reversible Functional Group Metathesis between Aryl Nitriles and Aryl Thioethers
作者:Tristan Delcaillau、Philip Boehm、Bill Morandi
DOI:10.1021/jacs.1c00529
日期:2021.3.17
We describe a new functional group metathesis between aryl nitriles and aryl thioethers. The catalytic system nickel/dcype is essential to achieve this fully reversible transformation in good to excellent yields. Furthermore, the cyanide- and thiol-free reaction shows high functional group tolerance and great efficiency for the late-stage derivatization of commercial molecules. Finally, synthetic applications
first catalytic process has been developed for the direct synthesis of amides from readily available petroleum by‐products (methylarenes) and amines using an iron catalyst. In this new catalytic reaction, the methylgroup of the methylarene is oxidized to the corresponding aldehyde through non‐directed CHoxidation followed by its oxidative amidation with N‐chloroamine, yielding the carboxylic amide
has been developed to access functionalized aryl nitriles. The ligand dcype (1,2-bis(dicyclohexylphosphino)ethane) in combination with the base KOAc (potassium acetate) is essential for achieving this transformation efficiently. This reaction involves both a C–Sbond activation and a C–Cbondformation. The scalability, low catalyst and reagents loadings, and high functional group tolerance have enabled
A novel and efficient protocol for the synthesis of amides is reported which employs a BODIPY catalyzed oxidative amidation reaction between aromatic aldehydes and amines under visible light. Compared with the known Ru or Ir molecular catalysts and other organic dyes, the BODIPY catalyst showed higher reactivity toward this reaction. Mechanistic studies reveal that dioxygen could be activated through
Ortho lithiation-in situ borylation of substituted morpholine benzamides
作者:Anna Cederbalk、Morten Lysén、Jan Kehler、Jesper L. Kristensen
DOI:10.1016/j.tet.2017.02.002
日期:2017.3
Morpholine amides are cheap and safe alternative to Weinreb amides as acylating agents of organometallic species. Herein, the in-situ lithiation/borylation of 18 ortho- meta- and para-substituted morpholine benzamides has been investigated. 10 of the 18 substrates provided the desired boronic esters as the major isomer (>90% regioselectivity) in crude isolated yields ranging from 68 to 93%. The synthetic