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Stable Dialkyl ether/poly(hydrogen Fluoride) Complexes: Dimethyl ether/poly(hydrogen Fluoride), a New, Convenient, and Effective Fluorinating Agent

Stable Dialkyl ether/poly(hydrogen Fluoride) Complexes: Dimethyl ether/poly(hydrogen Fluoride), a New, Convenient, and Effective Fluorinating Agent

Imre Bucsi, Béla Török, Alfonso Iza Marco, Golam Rasul, G K Surya Prakash, George A Olah

J Am Chem Soc. 2002 Jul 3;124(26):7728-36.

PMID: 12083926

Abstract:

The preparation, (1)H, (13)C, and (19)F NMR structural characterization as well as with DFT-based theoretical calculations of stable dialkyl ether/poly(hydrogen fluoride) complexes are reported. Dimethyl ether/poly(hydrogen fluoride) (DMEPHF), are stable complexes of particular interest and use. The DFT calculations, that are in agreement with NMR data, suggest a cyclic poly(hydrogen fluoride) bridged structure for DMEPHF. The complex, DME-5 HF was found to be a convenient and effective new fluorinating agent with the ease of workup and applied to several fluorination reactions, such as the hydrofluorination and bromofluorination of alkenes, and fluorination of alcohols giving good to excellent yield with high selectivity. Homologous dialkyl ether/poly(hydrogen fluoride) (R(2)O/[HF](n,), R = Et, nPr) systems are also stable and suitable for fluorination reactions.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP79821639	Poly[4-vinylpyridinium poly(hydrogen fluoride)]		79821-63-9	Price

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