Poly-4-vinylpyridinium Poly(Hydrogen Fluoride): A Solid Hydrogen Fluoride Equivalent Reagent

Autor:	Xing-Ya Li, Qi Wang, George A. Olah, G. K. Surya Prakash
Rok vydání:	1993
Předmět:	chemistry.chemical_compound chemistry Solid hydrogen Reagent Organic Chemistry Inorganic chemistry Alcohol Hydrogen fluoride Fluoride Catalysis
Zdroj:	Synthesis. 1993:693-699
ISSN:	1437-210X 0039-7881
DOI:	10.1055/s-1993-25924
Popis:	Poly-4-vinylpyridinium poly(hydrogen fluoride) (PVPHF), containing 35-60% hydrogen fluoride by weight, was prepared as a solid hydrogen fluoride equivalent reagent. PVPHF with 60% hydrogen fluoride by weight was found to be a versatile fluorinating agent for the hydrofluorination and bromofluorination of alkenes and alkynes, fluorination of alcohols as well as other fluorination reactions. Low hydrogen fluoride content PVPHF (3 equivalents of hydrogen fluoride to 1 equivalent of 4-vinylpyridine unit) was also found to be an efficient reagent for bromofluorination of alkenes in the presence of 1,3-dibromo-5,5-dimethylhydantoin. Fluorosulfonic acid-modified PVPHF showed enhanced reactivities for the fluorination of secondary alcohols
Databáze:	OpenAIRE
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