Imines yog cov nitrogen analogues ntawm aldehydes thiab ketones, muaj C=N daim ntawv cog lus es tsis txhob C=O. daim ntawv cog lus. Lawv raug tsim dhau los ntawm lub cev qhuav dej ntawm aldehyde lossis ketone nrog amines Imines tau los ntawm aldehydes qee zaum hu ua aldimines, imines tau los ntawm ketones qee zaum hu ua ketimines.
Hydrazone tsim li cas?
Hydrazones kuj tseem tuaj yeem tsim los ntawm Japp-Klingemann cov tshuaj tiv thaiv ntawm β-keto-acidslossis β-keto-esters thiab aryl diazonium ntsev. Hydrazones hloov mus rau azines thaum siv hauv kev npaj ntawm 3, 5-disubstituted 1H-pyrazoles, ib qho tshuaj tiv thaiv kuj paub zoo siv hydrazine hydrate.
Acetals tsim li cas?
Kev tsim ntawm Acetals
Acetals yog cov geminal-diether derivatives ntawm aldehydes los yog ketones, tsim los ntawm cov tshuaj tiv thaiv nrog ob qhov sib npaug (los yog ntau tshaj) ntawm cawv thiab tshem tawm dej Ketone derivatives ntawm hom no yog ib zaug hu ua ketals, tab sis niaj hnub siv tau poob lub sij hawm ntawd.
Imine tsim los ntawm amine li cas?
Reaction nrog thawj amines los tsim imines
Cov tshuaj tiv thaiv ntawm aldehydes thiab ketones nrog ammonia lossis 1º-amines daim ntawv imine derivatives, tseem hu ua Schiff bases (compounds. muaj C=N function). Dej raug tshem tawm hauv cov tshuaj tiv thaiv, uas yog acid-catalyzed thiab thim rov qab rau tib lub ntsiab lus raws li kev tsim acetal.
Yuav ua li cas ua tus iminium ion?
Iminium cations tau txais los ntawm protonation thiab alkylation ntawm imines : RN=CR'2 + H+ → [RNH=CR'2] RN=CR'2 + R"+→ [RR"N=CR'2] Cov tshuaj tiv thaiv sai, thim rov qab yog ib kauj ruam hauv "iminium catalysis".
