ChemicalBook CAS DataBase List Isoflurane

Isoflurane synthesis

2synthesis methods

Product Name:Isoflurane
CAS Number:26675-46-7
Molecular formula:C3H2ClF5O
Molecular Weight:184.49

Isoflurane is prepared by chlorination of 2,2,2-trifluoroethoxydifluoromethane, itself obtained by alkylation of trifluoroethanol with difluorochloromethane , :
Synthesis_26675-46-7

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26675-46-7
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Yield:26675-46-7 88.3%

Reaction Conditions:

at 30 - 35; for 3 h;Autoclave;Inert atmosphere;Temperature;

Steps:

1-9
Fill the above-mentioned autoclave with Freon-123 (230g), after adding nitrogen, stir and react for 3 hours at 30-35°C, the reaction is over, the reaction solution is cooled to room temperature, stand still, and separate to obtain the lower organic layer Phase, wash with purified water (3×30mL) to obtain isoflurane solution, collect fractions at 4849 by rectification to obtain pure isoflurane, the yield is 88.3% (based on the consumed Freon-22) and the purity is 99.88% .

References:

Lunan Pharmaceutical Group Co., Ltd.;Wang Haibo;Ti Wenli CN112028749, 2020, A Location in patent:Paragraph 0021; 0034; 0036-0037; 0039-0040; 0042-0043; 0045

FullText

DIFLUOROMETHYL 2,2,2-TRIFLUOROETHYL ETHER

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References

Isoflurane Related Search:

4-Methoxybenzylchloride Epichlorohydrin 4-(Trifluoromethoxy)aniline 5-METHYLHEXANOIC ACID compound 485 1-Chloro-2,2,2-trifluoroethyl chlorodifluoroMethyl ether 2-Methyl-1-propanol 1,1-DICHLORO-2,2,2-TRIFLUOROETHYL CHLORODIFLUOROMETHYL ETHER Halothane Dichlorofluoroethane