Comparative studies on the enantioselective fluorination of oxindoles with structurally modified N-fluorobenzenesulfonimides
Structurally modified N-fluorobenzenesulfonimides (NFSIs) have been used to study the enantioselective fluorination of oxindoles in the presence of a bis-cinchona alkaloid, (DHQD)2PHAL, as the catalyst. We observe that the NFSI analogues bearin
Preparation of (8S)-8-fluoroerythromycins with N-F fluorinating agents
(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
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(2008/06/13)
Method for preparing N-fluorosulfonimides
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 fluorinati
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(2008/06/13)
N-fluorosulfonimides and their application as fluorinating agents
The invention describes N-fluorosulfonimides which are useful as fluorinating agents. The N-fluorosulfonimides are stable, easily synthesized, and allow the introduction of fluorine into organic compounds under mild conditions.
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(2008/06/13)
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