Video: MCPBA ua dab tsi hauv qhov tshuaj tiv thaiv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
mCPBA (meta-chloroperoxybenzoic acid): Ib qho peracid muab tau los ntawm meta-chlorobenzoic acid. Ib qho oxidant; Hloov cov alkene mus rau epoxide, thiab thioether rau sulfoxide, thiab tom qab ntawd mus rau sulfone. Hauv no epoxidation tshuaj tiv thaiv , mCPBA oxidizes cyclohexene rau cov epoxide coj.
Ib yam li ntawd, reagent mCPBA ua dab tsi?
mCPBA tsim epoxides thaum ntxiv rau alkenes. Ib qho tseem ceeb ntawm cov tshuaj tiv thaiv no yog qhov stereochemistry ib txwm khaws cia. Ntawd yog, cis alkene yuav muab cis-epoxide, thiab trans alkene yuav muab trans epoxide. Qhov no yog ib qho piv txwv tseem ceeb ntawm cov tshuaj tiv thaiv stereoselective.
Tsis tas li ntawd, mCPBA puas yog peroxide? MCPBA reagent. Kev siv hluavtaws sib txawv peroxides rau cov organic synthesis tau dav kawm. Ntawm cov no peroxides , meta-chloroperbenzoic acid ( MCPBA ) yog ib qho oxidizing reagent zoo thiab tau siv rau ntau yam kev hloov oxidative.
Tom qab ntawd, epoxidation tshuaj tiv thaiv yog dab tsi?
Epoxidation yog tshuaj tshuaj tiv thaiv uas hloov cov carbon-carbon ob daim ntawv cog lus rau oxiranes ( cov epoxides ), siv ntau yam reagents suav nrog huab cua oxidation, hypochlorous acid, hydrogen peroxide, thiab organic peracid (Fettes, 1964).
Dab tsi epoxide yog tsim thaum txhua alkene raug kho nrog mCPBA?
Thaum ib alkene raug kho nrog mCPBA nws ua rau cov tshuaj tiv thaiv epoxidation. Nyob rau hauv cov tshuaj tiv thaiv epoxidation, ib qho oxygen atom yog muab tso rau hauv ob daim ntawv cog lus los tsim ib lub nplhaib peb-tus tswv cuab hu ua tshuaj epoxide nplhaib.
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