Theoretical Studies On Iron-Catalyzed Azaindoline Formation: Mechanism And Site-Selectivity
DALTON TRANSACTIONS(2021)
摘要
The mechanism and site-selectivity for Fe-catalyzed azaindoline formation from 1,2,3,4-tetrazole were examined computationally. The H-atom abstraction/radical rebound stepwise mechanism is proposed. The aliphatic H-atom abstraction (HAA) vs. electrophilic aromatic substitution (EAS) steps are responsible for the sp(3)vs. sp(2) C-H amination site-selectivity and a larger steric congestion disfavors sp(2) EAS, thus resulting in Fe-catalyzed site-selectivity toward sp(3) C-H amination.
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关键词
azaindoline formation,iron-catalyzed,site-selectivity
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