摘要:
Disclosed are mild temperature (e.g., from 0 to 80°C) S N Ar fluorinations of a variety of halide and sulfonate substituted aryl and heteroaryl substrates using NMe 4 F.
摘要:
Methods of preparing a fluorinated aryl or heteroaryl substrate by combining a quaternary ammonium cyanide and an aryl or heteroaryl substrate substituted with at least one chloro, bromo, sulfonyl, or nitro group to thereby provide a mixture, and combining the mixture with hexafluorobenzene to thereby provide the fluorinated substrate.
摘要:
The present technology relates to fluorination reactions. Specifically, processes useful for making the fungicide compound, DFT are disclosed. More broadly, also disclosed herein are processes useful for deoxyfluorination at the α-aromatic position of a given compound.
摘要:
Methods of preparing a fluorinated substrate by combining potassium fluoride, a quaternary ammonium salt, and a substrate substituted with at least one chloro, bromo, sulfonyl, or nitro group to thereby provide the fluorinated substrate are disclosed.
摘要:
2-Trifluoromethyl-5-(1-substituted)alkylpyridines are produced efficiently and in high yield from an alkyl vinyl ether and trifluoroacetyl chloride by cyclization.
摘要:
4-Chloro-4-alkoxy-1,1,1-trifluoro-2-butanones, prepared by reacting alkyl vinyl ethers with trifluoroacetyl chloride, are useful for preparing 4-alkoxy-1,1,1-trifluoro-3-buten-2-ones.
摘要:
Alkylthio substituted aldehydes, ketones, esters and sulfones are prepared by reacting α,β-unsaturated carbonyl and sulfonyl compounds with a sodium or potassium thiolate in the presence of a alkane carboxylic acid and water.
摘要:
Disclosed is a fluorination method comprising providing an aryl fluorosuifonate and a fluorinating reagent to a reaction mixture; and reacting the aryl fluorosuifonate and the fluorinating reagent to provide a fluorinated aryl species. Also disclosed is a fluorination method comprising providing, a salt comprising a cation and an aryloxyiate, and SO 2 F 2 to a reaction mixture; reacting the SO 2 F 2 and the ammonium salt to provide a fluorinated aryl species. Further disclosed a fluorination method comprising providing a compound having the structure Ar-OH to a reaction mixture; where A is an aryl or heteroaryl; providing SO 2 F 2 to the reaction mixture; providing a fluorinating reagent to the reaction mixture; reacting the SO 2 F 2 , the fluorinating reagent and the compound having the structure Ar-OH to provide a fluorinated aryl species having the structure Ar-F.
摘要:
Disclosed is a f fluorination method comprising providing a fluorinating reagent and a solvent to a reaction mixture; providing a compound having the formula Ar-X to the reaction mixture; wherein, A is a aryl, substituted aryl, heteroaryl or substituted heteroaryl, and X is CI, Br, I or NO 2 , providing tetramethylammonium 2,6-dimethylphenolate to the reaction mixture; and reacting under conditions sufficient to provide a species having the formula Ar-F.