first cobalt‐catalyzed hydrogenative N‐methylation and alkylation of amines with readily available carboxylic acid feedstocks as alkylating agents and H2 as ideal reductant is described. Combination of tailor‐made triphos ligands with cobalt(II) tetrafluoroborate significantly improved the efficiency, thus promoting the reaction under milder conditions. This novel protocol allows for a broad substrate scope
affordable synthesis of (deuterated) N-methyl/ethyl amines directly from nitroarenes is disclosed. The reaction is catalyzed by a single-site manganese catalyst and involves tandem dehydrogenation, transfer hydrogenation, and borrowing hydrogenation. This catalytic protocol is highlyselective and provides a facile method for the large-scale synthesis of a series of N-CH3/N-CD3 aniline derivatives with excellent
公开了直接从硝基芳烃可持续和负担得起的(氘代)N-甲基/乙基胺的合成。该反应由单中心锰催化剂催化,包括串联脱氢、转移氢化和借位氢化。该催化方案具有高选择性,为大规模合成一系列具有优异官能团耐受性的N -CH 3 / N -CD 3苯胺衍生物提供了一种简便的方法。
Haddow et al., Philosophical transactions of the Royal Society of London. Series A, Mathematical and physical sciences, 1948, vol. 241, p. 147,185