Hydride Reagent

Electron-rich, the hydride ion (1) should in theory be a base and a nucleophile.



In practice, however, the hydride ion is strongly basic but not nucleophilic.  A reagent that, in a reaction, acts as the hydride ion would if it were nucleophilic is called a hydride reagent or hydride equivalent.  The most common hydride reagents are the reducing agents sodium borohydride (NaBH4) and lithium aluminumhydride (LiAlH4).

eg:



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