The Methodological Value of HATU in Difficult Couplings: Reactivity Advantages, Stereochemical Retention, and Condition Management
HATU [O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate] has long been used as a high-performance coupling reagent, but the real reason it merits separate discussion is not simply that reactions proceed faster. In couplings between ordinary carboxylic acids and ordinary ...
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