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.
Synthesis of γ-lactams via Ru(II)–Pheox-catalyzed regioselective intramolecular Csp3–H insertion of diazoacetamides
作者:Takuji Fujii、Huong Dang Thi Thu、Seiji Iwasa
DOI:10.1016/j.tetlet.2020.152276
日期:2020.9
Herein, γ-lactam derivatives are obtained in high yield via highly regioselectiveintramolecular Csp3–H insertion reactions of α-diazoacetamides catalyzed by a rac-Ru(II)–Pheox complex. The catalytic system is applicable to a wide range of diazoacetamides under mild conditions to produce the corresponding γ-lactams.
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.