(1S,2R,4R,5S)-3,6,8-trioxatricyclo[3.2.1.02,4]octane
CAS index name = [1S-(1
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,2,4,5)]-3,6,8-trioxatricyclo[3.2.1.02,4]octane
Contents of Section
VB-9 Configuration of Chiral Systems
References
The configuration of a chiral ring system with a unique numbering determined by the structure is specified by the R/S system. It may thus be necessary to specify whether the name refers to one enantiomer, a racemate, or is only indicating relative configuration.
Example
,2,4,5)]-3,6,8-trioxatricyclo[3.2.1.02,4]octaneNote A different method of indicating stereochemistry has been adopted by CAS starting with volume 129 of Chemical Abstracts. This would also apply to the names given in VB-8.5.
If it is required to specify that this name applies to a racemate, or that only the relative stereochemistry is known the prefixes rac- or rel- may be used. Thus for the example above:
| This example | (1S,2R,4R,5S)-3,6,8-trioxatricyclo[3.2.1.02,4]octane |
| Its enantiomer | (1R,2S,4S,5R)-3,6,8-trioxatricyclo[3.2.1.02,4]octane |
| Racemic sample | (1RS,2SR,4SR,5RS)-3,6,8-trioxatricyclo[3.2.1.02,4]octane |
| or | rac-(1R,2S,4S,5R)-3,6,8-trioxatricyclo[3.2.1.02,4]octane |
| Relative configuration only | (1R*,2S*,4S*,5R*)-3,6,8-trioxatricyclo[3.2.1.02,4]octane |
| or | rel-(1R,2S,4S,5R)-3,6,8-trioxatricyclo[3.2.1.2,4]octane |
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