Acetoacetic acid tuaj yeem npaj los ntawm the hydrolysis ntawm diketene Nws cov esters yog tsim los ntawm cov tshuaj tiv thaiv ntawm diketene thiab cawv, thiab acetoacetic acid tuaj yeem npaj los ntawm hydrolysis ntawm cov tsiaj no.. Feem ntau, acetoacetic acid yog tsim los ntawm 0 ° C thiab siv tam sim ntawd.
Koj yuav npaj acetoacetic ester li cas hauv chav kuaj?
Thaum α-keto acetic acid raug kho nrog ib qho mole ntawm lub hauv paus, pawg methylene uas yog acidic ntau dua nrog lub hauv paus. Thiab cov tshuaj tiv thaiv nrog alkylation reagent muab alkyl cov khoom txuas nrog methylene.
ethyl acetoacetate npaj li cas?
Ethyl acetoacetate yog tsim los ntawm kev kho diketene nrog ethanol. Kev npaj ntawm ethyl acetoacetate yog cov txheej txheem kuaj sim. Nws yog npaj los ntawm Claisen condensation ntawm ethyl acetateOb moles ntawm ethyl acetate condense los ua ib lub mole txhua ntawm ethyl acetoacetate thiab ethanol.
Koj yuav npaj li cas acetoacetic ester los ntawm ethyl acetate?
Ethyl acetoacetate tuaj yeem npaj los ntawm ethyl acetate los ntawm kev ua ntawm sodium, 1 sodium ethoxide, 2sodamide, 3 thiab calcium Thaum lub condensation, siv sodium ethoxide, yog ua raws li ib tug zoo xws li tshem tawm cov cawv tsim, cov yield tau tshaj tawm tias yog 80 feem pua. ntawm tus nqi theoretical.
Dab tsi yog cov khoom ntawm decarboxylation ntawm acetoacetic acid?
Lub decarboxylation ntawm acetoacetic acid, a β-keto acid, tshwm sim los ntawm txoj kev hloov pauv hauv lub xeev uas cov proton raug xa tawm los ntawm carboxylate atom mus rau carbonyl oxygen kom muab cov enol uas sai tautomerizes muabacetone.
Acetoacetic Ester Synthesis Reaction Mechanism
