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Angew. Chem. Int. Ed. 2015, 54 (22), 6373‑6373

DOI: 10.1002/anie.201503577

Mykhailiuk P. K.

The elusive reagent difluoromethyl diazomethane (CF2HCHN2) was generated in situ for the first time and employed in [3+2] cycloaddition reactions with alkynes. In his Communication on page 6558 ff., P. Mykhailiuk describes that this one-pot process for the synthesis of difluoromethylated pyrazoles is very practical as it does not require a catalyst or the isolation of the potentially toxic and explosive gaseous intermediate and can be easily scaled up.

Cover Picture: In Situ Generation of Difluoromethyl Diazomethane for [3+2] Cycloadditions with Alkynes (Angew. Chem. Int. Ed. 22/2015)

 

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