Inherent Oxygen Preference in Enolate Monofluoromethylation and a Synthetic Entry to Monofluoromethyl Ethers

Expect the unexpected: The self-stable salts 1, X=OTf, PF6, x=2, y=1, developed for electrophilic monofluoromethylation showed inherent selectivity for the O-alkylation of enolates, thus providing access to monofluoromethyl ethers, which are difficult to obtain by the direct electrophilic fluoromethylation of alcohols. Salt 1, X=BF4, x=0, y=3, in contrast leads to C-alkylated products. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.