Direct preparation of unprotected aminimides (R<sub>3</sub>N<sup>+</sup>–NH<sup>−</sup>) from natural aliphatic tertiary alkaloids (R<sub>3</sub>N) by [Mn(TDCPP)Cl]-catalysed <i>N</i>-amination reaction
作者:Shilong Zhang、Yungen Liu、Fangrong Xing、Chi-Ming Che
DOI:10.1039/d0cc02934c
日期:——
alkaloids (R3N) were directly converted to R3N+–NH− (without the need to prepare protected aminimides R3N+–NR′− followed by deprotection) by [Mn(TDCPP)Cl]-catalysed N-amination reaction, with O-(2,4-dinitrophenyl)hydroxylamine as the nitrogen source, in up to 98% yields under mild reaction conditions.
Oxysophoridine (OSR), an alkaloid extracted from a traditional Chinese medicine, attracted more and more attention because of remarkable biological activities. Biocatalysis of OSR by 86 stains including soil microbes and endophytic fungi were investigated. Incubation of OSR with soil bacteria T003 identified as Escherichia coli could lead to only one reductive product with highly regio‐selectivity