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In this video I am making Pyrylium Tetrafluoroborate, a unique oxonium containing heterocycle that is very useful for the transformation of heterocyclic amines. It's currently used quite little due to its price, availability and knowledge about what it can be used for. The introduction and wide adoption of new reagents in chemistry is quite slow.

Procedure:
https://orgsyn.org/demo.aspx?prep=v10...

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