(1S)-(+)-(Camphorylsulfonyl)oxaziridine Chemische Eigenschaften,Einsatz,Produktion Methoden
S-S?tze Betriebsanweisung:
S22:Staub nicht einatmen.
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Chemische Eigenschaften
(1S)-(+)-(Camphorylsulfonyl)oxaziridine is white crystall powder
Verwenden
(1S)-(+)-(Camphorylsulfonyl)oxaziridine is a useful synthetic intermediate. Used for asymmetric hydroxylation
Synthese
The enantiopure (1S)-(+)-(Camphorylsulfonyl)oxaziridine and (1R)-(-)-(10-Camphorsulfonyl)oxaziridine and [(8,8- dichlorocamphor)sulfonyl]oxaziridines (2) are commercially available. They can also be prepared on a large scale via the oxidation of corresponding camphorsulfonimines with buffered Potassium Monoperoxysulfate (Oxone) or buffered peracetic acid. Since oxidation takes place from the endo face of the C=N double bond, only a single oxaziridine isomer is obtained. The precursor camphorsulfonimines can be prepared in 3 steps (>80% yield) from inexpensive (+)- and (-)-10-Camphorsulfonic Acids. A variety of (camphorylsulfonyl)oxaziridine derivatives such as (2)-(4) are also readily available via the functionalization of the camphorsulfonimines followed by oxidation.
Einzelnachweise
1. Mergelsberg, I.; Gala, D.; Scherer, D.; DiBenedetto, D.; Tanner TL 1992, 33, 161.
2. Davis, F. A.; Kumar, A.; Chen, B.-C. JOC 1991, 56, 1143.
3. Chen, B.-C.; Weismiller, M. C.; Davis, F. A.; Boschelli, D.; Empfield, J. R.; Smith, III, A. B. T 1991, 47, 173.
(1S)-(+)-(Camphorylsulfonyl)oxaziridine Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
