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One of the NHC–iridium coordination assemblies containing 1,5‐cyclooctadiene (COD) and iodide ion has been demonstrated as robust, efficient, recyclable solid molecular catalyst for N‐formylation of diverse primary and secondary amines with CO2 and H2 under mild reaction conditions. Remarkably, in the case of N,N‐dimethylformamide production, even at 0.1 mol % catalyst loading under solvent‐free conditions, the solid catalyst can be readily recovered by simply filtration and reused more than 10 runs without noticeable loss of activity. One of the NHC–iridium coordination assemblies containing 1,5‐cyclooctadiene (COD) and iodide ion has been demonstrated as a robust, efficient and recyclable solid molecular catalyst for N‐formylation of various primary and secondary amines with H2 and CO2 under mild reaction conditions at catalyst loadings as low as 0.1 mol %. [ABSTRACT FROM AUTHOR]

Abstract: By using the commercially available ruthenium pincer complex (Ru‐MACHO‐BH) as a catalyst, the challenging direct hydrogenation of lactams and analogues has been successfully accomplished to deliver corresponding value‐added amino alcohols in good‐to‐excellent yields under mild reaction conditions. Remarkably, in addition to N‐protected lactams, unprotected ones could also be readily reduced in the presence of a catalytic amount of weak base or even under neutral reaction conditions, which further highlights the broad substrate scope and the protocol efficiency. [ABSTRACT FROM AUTHOR]