Abstract:
The present invention relates to the preparation and uses of 1-substitued-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane salts, specifically 1-hydroxyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane salts as reagents for the introduction of fluorine in organic compounds. In formula (I) Z is OH, OR, OC(O)R, SO3, SO3, SO2R, NO2, NO, or P(O) (OR)2 with R being an aryl or C1-C8 alkyl, where n represents 0, 1 or 2; each R1, R2, R3, R4 and R5 independently represents hydrogen, C1-C8 alkyl, aryl, C1-C8 alkyl; and each X independently represents a counterion or 2X represents a single divalent counterion.
Abstract:
A process for producing 1-substituted-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane salts having formula (I) wherein the Z substituent is OH, OR, OC(O)R, SO3, SO2R, NO2, NO, or PO(OR)2, wherein R is an aryl or C1-C8 alkyl group; n is 0, 1 or 2; each of R1, R2, R3, R4 and R5 independently represent hydrogen, C1 to C8 alkyl, or aryl. 1-substituted-1,4-diazoniabicyclo[2.2.2]octane or 1,4-diazoniabicyclo[2.2.2]octane mono-N-oxide is reacted to attach the Z group and then the result is reacted with molecular fluorine in the presence of a solvent that substantially does not react with fluorine and a fluoride scavenger that results in an X counter ion. These compounds are useful as fluorinating agents for the introduction of fluorine into organic compounds.
Abstract:
Fluorination processes using hydrogen fluoride-containing fluorinating agents that are safely and easily handled, transported, and stored and that also exhibit good reactivity are provided. More particularly, the invention provides processes for producing fluorinated products using fluorinating agents comprising hydrogen fluoride and a carrier that may be an acid salt or a water-soluble polymer.
Abstract:
(8S)-8-fluoroerythromycins are prepared by reacting 8,9-anhydroerythromycin 6,9-hemiacetals or an N-oxide thereof with a carboxylic acid and an N-F fluorinating agent. The anhydro starting material may be prepared in situ from erythromycins or an N-oxide derivative thereof. The (8S)-8-fluoroerythromycin products are useful antibacterial agents.
Abstract:
The present invention relates to the preparation and uses of 1-substitued-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane salts, specifically 1-hydroxyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane salts as reagents for the introduction of fluorine in organic compounds. In formula (I) Z is OH, OR, OC(O)R, SO3, SO3, SO2R, NO2, NO, or P(O) (OR)2 with R being an aryl or C1-C8 alkyl, where n represents 0, 1 or 2; each R1, R2, R3, R4 and R5 independently represents hydrogen, C1-C8 alkyl, aryl, C1-C8 alkyl; and each X- independently represents a counterion or 2X- represents a single divalent counterion.
Abstract:
The present invention relates to the preparation and uses of 1-substitued-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane salts, specifically 1-hydroxyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane salts as reagents for the introduction of fluorine in organic compounds. In formula (I) Z is OH, OR, OC(O)R, SO3, SO3, SO2R, NO2, NO, or P(O) (OR)2 with R being an aryl or C1-C8 alkyl, where n represents 0, 1 or 2; each R1, R2, R3, R4 and R5 independently represents hydrogen, C1-C8 alkyl, aryl, C1-C8 alkyl; and each X- independently represents a counterion or 2X- represents a single divalent counterion.
Abstract:
The present invention relates to a process of preparing N-benzenesulfonimides comprising reacting an alkali metal salt of a sulfonimide with fluorine in the presence of water or water/organic solvent mixtures. N-fluorosulfonimides are useful as fluorinating agents. The N-fluorosulfonimides allow the introduction of fluorine into organic compounds under mild conditions.
Abstract:
Fluorination processes using hydrogen fluoride-containing fluorinating agents that are safely and easily handled, transported, and stored and that also exhibit good reactivity are provided. More particularly, the invention provides processes for producing fluorinated products using fluorinating agents comprising hydrogen fluoride and a carrier that may be an acid salt or a water-soluble polymer.
Abstract:
A process for producing 1-substituted-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane salts having formula (I) wherein the Z substituent is OH, OR, OC(O)R, SO3, SO2R, NO2, NO, or PO(OR)2, wherein R is an aryl or C1-C8 alkyl group; n is 0, 1 or 2; each of R1, R2, R3, R4 and R5 independently represent hydrogen, C1 to C8 alkyl, or aryl. 1-substituted-1,4-diazoniabicyclo[2.2.2]octane or 1,4-diazoniabicyclo[2.2.2]octane mono-N-oxide is reacted to attach the Z group and then the result is reacted with molecular fluorine in the presence of a solvent that substantially does not react with fluorine and a fluoride scavenger that results in an X counter ion. These compounds are useful as fluorinating agents for the introduction of fluorine into organic compounds.
Abstract:
The present invention relates to a process of preparing N-benzenesulfonimides comprising reacting an alkali metal salt of a sulfonimide with fluorine in the presence of water or water/organic solvent mixtures. N-fluorosulfonimides are useful as fluorinating agents. The N-fluorosulfonimides allow the introduction of fluorine into organic compounds under mild conditions.