A Rh(III)-catalyzed regioselective intermolecular carbenoid insertion into the N-methylene Csp3–H bond of acyclic aliphatic amides has been achieved, taking advantage of bidentate–chelation assistance. This methodology has been successfully applied to a broad range of linear and branched-chain N-alkylamides, thus providing a practical method for the assembly of diverse beta-amino esters. Mechanism
[EN] FORMAMIDE COMPOUNDS AS THERAPEUTIC AGENTS<br/>[FR] COMPOSES FORMAMIDES UTILISES COMME AGENTS THERAPEUTIQUES
申请人:GLAXO GROUP LTD
公开号:WO2000012082A1
公开(公告)日:2000-03-09
A family of compounds having general structural formula (I) where W is a reverse hydroxamic acid group, and R1, R2, R3, R4, R5 and R6 are as described in the specification, or a pharmaceutically acceptable salt, solvate, biohydrolyzable ester, biohydrolyzable amide, affinity reagent, or prodrug thereof. Also described are methods for their preparation, pharmaceutical compositions including such compounds and their use in medicine.
Iridium(III)‐Catalyzed Regioselective Intermolecular Unactivated Secondary Csp
<sup>3</sup>
−H Bond Amidation
unactivated secondary Csp3−H bond has been achieved using IrIII catalysts. The introduced N,N’‐bichelating ligand plays a crucial role in enabling iridium–nitrene insertion into a secondary Csp3−H bond via an outer‐sphere pathway. Mechanistic studies and density functional theory (DFT) calculations demonstrated that a two‐electron concerted nitrene insertion was involved in this Csp3−H amidation process