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- W42901981 endingPage "782" @default.
- W42901981 startingPage "738" @default.
- W42901981 abstract "The ‘radical beginnings’ of C–H insertion rely on the presence of a functional group that can produce a carbon radical at a remote position, which works best with fairly rigid substrates. According to the historical development, this review starts with the discussion of some classical, free radical-based C–H insertion reactions including the Hofmann–Löeffler–Freytag reaction, the hypoiodite reaction, and the Barton reaction. Presently, C–H insertions are mainly attributed to transition metal-mediated transformations in which the functionality X is either delivered from the metal center (‘outer sphere mechanism’) or via the formation of an organometallic intermediate (‘inner sphere mechanism,’ C–H activation). In both cases, diastereodifferentiation is mostly achieved by a ligand-directed mechanism. Reactions that follow the outer sphere mechanism include carbene and nitrene insertions as well as some oxidative enzyme mimics. Diastereoselective C–H activations mostly include the ligand-directed formation of organo-palladium intermediates that react with oxygen or nitrogen nucleophiles rather than carbon–carbon bonds are formed." @default.
- W42901981 created "2016-06-24" @default.
- W42901981 creator A5036236468 @default.
- W42901981 date "2012-01-01" @default.
- W42901981 modified "2023-09-27" @default.
- W42901981 title "2.24 Selected Diastereoselective Reactions: C–H Insertions" @default.
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