carboxylic acid

Carboxylic acids are common starting materials in organic synthesis and can be further converted into aldehydes, amides, esters, and a variety of heterocyclic compounds. However, carboxylic acids themselves are relatively stable, and their direct participation in many transformations is often ...

TCFH [N,N,N′,N,N′-tetramethylchloroformamidinium hexafluorophosphate] is often simply classified as a “powerful coupling reagent,” but a more accurate description is that it is a carboxylic acid activation reagent capable of directing carboxylic acids into different highly reactive ...

tert-Butyl esters are among the most commonly used protecting groups for carboxylic acids. Their long-standing importance mainly rests on two features: first, they show good stability toward a variety of nucleophiles and reducing conditions; second, they can be removed relatively conveniently ...