Carbon Tetrachloride → HCID 20384180, compound
Reaction equation
[C:1]([C:4]1[CH:17]=[CH:16][C:15]2[O:14][C:13]3[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=3)[S:7](=[O:19])(=[O:18])[C:6]=2[CH:5]=1)([OH:3])=[O:2].[C:20](Cl)(Cl)(Cl)Cl>S(Cl)(Cl)=O>[CH3:20][O:2][C:1]([C:4]1[CH:17]=[CH:16][C:15]2[O:14][C:13]3[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=3)[S:7](=[O:19])(=[O:18])[C:6]=2[CH:5]=1)=[O:3]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
2-carboxyphenoxathiin-10,10-dioxide (0.50g.) in carbon tetrachloride (25ml.) and thionyl chloride (2.0 ml.) was boiled under reflux for 2 hr. The solvent was evaporated and methanol (20. ml.) added. The mixture was boiled under reflux for 20 min., and cooled, whereupon 2-methoxycarbonylphenoxathiin-10,10-dioxide crystallised out and was filtered off and dried, m.pt. 160° C.
Workup
- temperatureunder reflux for 2 hr
- customThe solvent was evaporated
- additionmethanol (20. ml.) added
- temperatureunder reflux for 20 min.
- temperaturecooled, whereupon 2-methoxycarbonylphenoxathiin-10,10-dioxide
- customcrystallised out
- filtrationwas filtered off
- customdried
Sources & evidence
- ORD record
- ord-84cda5c8fad64d8b9ff19ca8e5a929b7
- Source dataset
- uspto-grants-1977_05
- Patent number
- US04025635
Reaction notes
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