Video: Lub hom phiaj ntawm Diels Alder tshuaj tiv thaiv lab yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov lub hom phiaj ntawm no lab yog los qhia txog lub tswv yim ntawm lub melting point ntawm ib qho organic compound ua thawj kauj ruam hauv kev txheeb xyuas tshuaj lom neeg ntawm qhov sib xyaw thiab tshuaj xyuas nws cov purity. Tsis tas li ntawd, koj yuav ua kom lub voj voog sib txuas los ntawm kev ua haujlwm nto moo Diels - Alder Reaction.
Tsuas yog li ntawd, lub hom phiaj ntawm Diels Alder cov tshuaj tiv thaiv yog dab tsi?
Cov Diels - Alder tshuaj tiv thaiv yog cycloaddition ntawm 4 pi + 2 pi (diene + dienophile) system uas tsim cov khoom ruaj khov dua vim qhov tseeb tias sigma daim ntawv cog lus tsim muaj kev ruaj khov dua li cov pi bonds puas lawm.
Tom qab, lo lus nug yog, vim li cas txiv neej anhydride yog Dienophile zoo? Maleic anhydride kuj yog ib tug heev zoo dienophile , vim tias cov nyhuv electron rho tawm ntawm pawg carbonyl ua rau ob lub alkene carbons ua electron-tsis zoo, thiab yog li ib qho zoo lub hom phiaj rau kev tawm tsam los ntawm pi electrons hauv diene.
Ua raws li qhov no hauv kev txiav txim siab, vim li cas anthracene ua rau Diels Alder cov tshuaj tiv thaiv?
Anthracene raug mob a Diels - Alder tshuaj tiv thaiv nrog rau cov txiv neej anhydride muab lub cycloadduct nrog cov mis C18H12O3. Cov Diels - Alder tshuaj tiv thaiv yog lub conjugate ntxiv ntawm alkene rau ib tug diene. Cov alkene uas ntxiv rau diene yog hu ua dienophile.
Dienophile txhais li cas?
dienophile (plural dinophiles ) (organic chemistry) Ib tug compound uas nkag tau nrog ib tug diene; tshwj xeeb tshaj yog ib qho alkene hauv Diels-Alder cov tshuaj tiv thaiv.
Pom zoo:
Dab tsi yog qhov txawv ntawm daim ntawv qhia lub hom phiaj thiab daim ntawv qhia lub hom phiaj tshwj xeeb?
Qhov tseem ceeb hauv daim ntawv qhia dav dav yog nyob ntawm qhov chaw. Phab ntsa daim duab qhia chaw, feem ntau daim ntawv qhia pom nyob rau hauv atlases, thiab txoj kev maps yog tag nrho cov nyob rau hauv qeb no. Thematic maps, tseem hu ua daim ntawv qhia tshwj xeeb, qhia txog thaj chaw faib khoom ntawm ib lub ntsiab lus lossis qhov tshwm sim
Vim li cas cov tshuaj tiv thaiv kev zom zaub mov hu ua hydrolysis cov tshuaj tiv thaiv?
Thaum lub sij hawm zom mov, piv txwv li, decompositionreactions zom cov zaub mov loj rau hauv cov me me los ntawm kev ntxiv cov dej molecules. Hom tshuaj no hu ua hydrolysis. Raws li dej absorbs heatenergy, qee lub zog yog siv los rhuav tshem hydrogenbonds
Lub hom phiaj ntawm daim ntawv tshuaj tiv thaiv yog dab tsi?
Daim ntawv tshuaj tiv thaiv xav kom koj tsim kev tshuaj xyuas thiab tshuaj xyuas rau lub cev ntawm cov ntaub ntawv xws li kev nyeem ntawv, kev hais lus, lossis kev nthuav qhia cov tub ntxhais kawm. Lub hom phiaj ntawm daim ntawv tshuaj ntsuam xyuas yog tsom koj qhov kev xav ntawm lub ncauj lus tom qab kev tshuaj xyuas ze ntawm cov khoom siv
Cov tshuaj tiv thaiv dab tsi yog qhov tshuaj tiv thaiv neutralization?
Neutralization yog ib hom tshuaj tiv thaiv nyob rau hauv uas muaj zog acid thiab muaj zog puag react nrog ib leeg los tsim dej thiab ntsev
Dab tsi yog tshuaj lom neeg cov tshuaj tiv thaiv thiab cov tshuaj tiv thaiv lub cev?
Qhov sib txawv ntawm cov tshuaj tiv thaiv lub cev thiab cov tshuaj tiv thaiv tshuaj yog muaj pes tsawg leeg. Hauv cov tshuaj tiv thaiv tshuaj, muaj kev hloov pauv ntawm cov tshuaj hauv nqe lus nug; nyob rau hauv ib qho kev hloov ntawm lub cev muaj qhov sib txawv ntawm qhov tsos, tsis hnov tsw, los yog cov duab yooj yim ntawm cov qauv ntawm cov teeb meem yam tsis muaj kev hloov pauv hauv cov ntsiab lus