Exposure of thiocarbazone derivatives 6b-10b, 11c-13c, and 14a-15a to tributylstannane in the presence of AIBN leads to various nitrogen centered radicals which are easily captured by an internal olefin.
A facile and convenient synthesis of acetic nitronic anhydrides from aliphatic nitroalkenes and lithium ketone enolates and the efficient conversion of these anhydrides to 1,4-diketones, alkylpyrroles, diketone monooximes, dihydro-1,2-oxazines, pyrrolidines, 2-hydroxypyrrolidines, and 1-pyrrolines are recorded.
Iminyl radicals: Part I. generation and intramolecular capture by an olefin.
作者:Jean Boivin、Eric Fouquet、Samir Z. Zard
DOI:10.1016/s0040-4020(01)80849-8
日期:1994.1
Slow addition of tributylstannane to sulphenylimines 2 give the corresponding Δ1- pyrrolenines 5 by an intramolecularaddition of the intermediate iminyl radical, a process which can be easily coupled to an intermolecular addition to an electrophilic olefin.
Visible-Light-Mediated Generation of Nitrogen-Centered Radicals: Metal-Free Hydroimination and Iminohydroxylation Cyclization Reactions
作者:Jacob Davies、Samuel G. Booth、Stephanie Essafi、Robert A. W. Dryfe、Daniele Leonori
DOI:10.1002/anie.201507641
日期:2015.11.16
formation and use of iminyl radicals in novel and divergent hydroimination and iminohydroxylationcyclizationreactions has been accomplished through the design of a new class of reactive O‐aryl oximes. Owing to their low reduction potentials, the inexpensive organic dye eosin Y could be used as the photocatalyst of the organocatalytic hydroiminationreaction. Furthermore, reaction conditions for a unique
Iminyl, amidyl, and carbamyl radicals from O-benzoyl oximes and O-benzoyl hydroxamic acid derivatives
作者:Jean Boivin、Anne-Claude Callier-Dublanchet、Béatrice Quiclet-Sire、Anne-Marie Schiano、Samir Z. Zard
DOI:10.1016/0040-4020(95)00319-4
日期:1995.6
Oxime benzoates and O-benzoyl hydroxamic acid derivatives react with tributylstannane in the presence of AIBN to give iminyl, amidyl, and carbamylradicals which can be captured by an internal olefin.