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- W2034155412 abstract "Abstract The novel arenesulfonimidoyl imidazoles 7a-j and nitrotriazoles 9d-j were obtained in good yield from the corresponding arenesulfonimidoyl chlorides 6a-j. The reaction of optically pure sulfonimidoyl chlorides 6 with imidazole resulted in the first reported optically active arenesulfonimidoyl imidazoles 7 with high enantiomeric purities (ee up to > 99%); the stereochemical course of the reaction (inversion or retention at sulfur) is shown to be strongly dependent on the aryl substituent. By contrast, the analogous reaction of optically pure compounds 6 with 3-nitro-1,2,4-triazole led to racemic arenesulfonimidoyl nitrotriazoles 9. Optically active compounds of this type, (S)-9f (ee 99%) and (R)-9f (ee 92%). were obtained by semi-preparative chiral HPLC. The optically active arenesulfonimidoyl imidazolium salt (R S,R C-)-8j was prepared by diastereoselective methylation (de > 90%) of the optically pure imidazole derivative (R S ,R C )-7j." @default.
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- W2034155412 date "1999-01-01" @default.
- W2034155412 modified "2023-09-29" @default.
- W2034155412 title "PREPARATION OF RACEMIC AND ENANTIOPURE ARENESULFONIMIDOYL AZOLES - NEW COMPOUNDS CHIRAL ON SULFUR" @default.
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