A DFT study on the reaction mechanisms of phosphonation of heteroaryl N-oxides with H-phosphonates

作者: Wei Zhang , Xiaoyang Zhao , Yan Qiao , Xiaokang Guo , Yanyan Wang

DOI: 10.1016/J.COMPTC.2015.08.012

关键词:

摘要: Abstract In this paper, a density functional theory (DFT) study has been carried out to theoretically investigate the mechanisms of direct regioselective phosphonation heteroaryl N-oxides ( A ) with H-phosphonates B1 under metal- and external oxidant-free conditions. The calculated results indicate that reaction proceeds through two stages including nucleophilic addition H-phosphonate N-oxide dehydration. Starting from reactant or its tautomer B2 , possible pathways have suggested studied in first stage. Moreover, three channels -assisted dehydration, dehydration investigated compared second Based on computational results, we can conclude both associated are occur experimental condition, / would lower barriers than This work should be helpful for understanding detailed mechanism title reaction, thus provide valuable insights into rational design effective method/condition kind reaction.

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