Rhodium-Catalyzed Allylic Substitution Reactions with Indium(III) Organometallics
作者:Ricardo Riveiros、Rubén Tato、José Pérez Sestelo、Luis A. Sarandeses
DOI:10.1002/ejoc.201200104
日期:2012.5
novel rhodium-catalyzed allylic substitution reaction using indium organometallics is reported. Aryl- and heteroarylindium reagents reacted in THF at 80 °C with primary and secondary allyl halides and their derivatives under rhodium(I) catalysis to afford the α-substituted products in good yields and with high regio- and stereoselectivity. The reaction takes place with substoichiometric amounts of
Iron Phosphine Catalyzed Cross-Coupling of Tetraorganoborates and Related Group 13 Nucleophiles with Alkyl Halides
作者:Robin B. Bedford、Peter B. Brenner、Emma Carter、Jamie Clifton、Paul M. Cogswell、Nicholas J. Gower、Mairi F. Haddow、Jeremy N. Harvey、Jeffrey A. Kehl、Damien M. Murphy、Emily C. Neeve、Michael L. Neidig、Joshua Nunn、Benjamin E. R. Snyder、Joseph Taylor
DOI:10.1021/om500518r
日期:2014.10.27
Iron phosphinecomplexes prove to be good precatalysts for the cross-coupling of alkyl, benzyl, and allyl halides with not only aryl triorganoborate salts but also related aluminum-, gallium-, indium-, and thallium-based nucleophiles. Mechanistic studies revealed that while Fe(I) can be accessed on catalytically relevant time scales, lower average oxidation states are not formed fast enough to be relevant
Transition-Metal-Free Oxidative Cross-Coupling of Triorganoindium Reagents with Tetrahydroisoquinolines
作者:José M. Gil-Negrete、José Pérez Sestelo、Luis A. Sarandeses
DOI:10.1021/acs.joc.9b00928
日期:2019.8.2
proceeds in good yields at rt using 50 mol % R3In with a variety of organic groups. 1H NMR studies show the generation of an iminium ion intermediate, supporting a two-step mechanism based on THIQ oxidation and R3In nucleophilic addition. This reaction was applied to the synthesis of the alkaloid nuciferine in three steps.
Chemo-, regio- and stereoselective addition of triorganoindium reagents to acetates of Baylis–Hillman adducts: a new strategy for the synthesis of (E)- and (Z)-trisubstituted alkenes
作者:Brindaban C. Ranu、Kalicharan Chattopadhyay、Ranjan Jana
DOI:10.1016/j.tetlet.2007.03.154
日期:2007.5
The addition of several trialkyl or triarylindium reagents to the acetates of Baylis–Hillmanadducts proceeds readily under the catalysis of copper and palladium derivatives. The reactions of trialkylindiums are catalyzed efficiently by CuI whereas additions of triarylindiums produce better results with Pd(PPh3)4. The reactions with 3-acetoxy-2-methylenealkanoates provide (E)-alkenes, whereas similar