TFPN [tetrafluorophthalonitrile, 3,4,5,6-tetrafluorophthalonitrile] has in recent years been used for amide bond and peptide bond formation under carboxylic acid activation conditions. Published studies have shown that this route can be applied to sterically hindered substrates and difficult ...
2-Chloro-1-methylpyridinium iodide, abbreviated as CMPI, is a representative member of Mukaiyama-type carboxylic acid activation reagents and is often referred to as a Mukaiyama reagent; more precisely, it is one of the classic representatives of Mukaiyama-type 2-halo-1-methylpyridinium ...
When a carboxylic acid and an amine are used to form an amide bond in a triphenylphosphine-involved system, the first distinction to make is whether the process proceeds through stoichiometric activation or through a catalytic cycle in which triphenylphosphine oxide is reduced in situ to ...
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TBTU [O-(benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium tetrafluoroborate] has long been one of the most commonly used coupling reagents for carboxylic acid activation and amide bond formation, and has been widely employed in both solution-phase amidation and solid-phase peptide synthesis ...
