2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Txawm li cas los xij, yog tias cov tshuaj tiv thaiv tau khiav hauv cov kua qaub me me, vim tias cov imine nitrogen yog qhov yooj yim dua li carbonyl oxygen, ntau dua ntawm imine nitrogen yuav protonated dua carbonyl oxygen. Qhov no yuav ua rau cov protonated imine carbon ntau ntau electrophilic (positively polarized).
Vim li cas ketones ntau dua reactive dua aldehydes?
Aldehydes feem ntau yog ntau dua reactive dua ketones vim yog cov hauv qab no. … Cov carbonyl carbon nyob rau hauv aldehydes feem ntau muaj ib nrab nqi zoo tshaj nyob rau hauv ketones vim electron-donating xwm ntawm alkyl pawg . Aldehydes tsuas muaj ib qho e- pab pawg neeg pub thaum ketones muaj ob.
Vim li cas cawv thiaj li muaj ntau dua aldehydes?
Alcohols yog reactive vim tias -OH tuaj yeem ua rau hauv pawg tawm zoo heev ntawm protonation. Hloov R-OH rau R-OH2+ ua rau R ntau raug rau nucleophilic nres.
Puas yog imines thiab Enamines ruaj khov?
Ib qho enamine yog ib qho tsis muaj qhov sib xyaw ua ke los ntawm kev sib xyaw ntawm aldehyde lossis ketone nrog cov amine thib ob. Imines ruaj khov dua enamines thiab ib qho enamine yuav tsim tsuas yog tsim cov imine tsis tau.
Kuv puas muaj ntau dua li cov ketone?
Imines yog tsawg electrophilic dua aldehydes thiab ketones Txo cov electrophilicity ntawm imines tau yooj yimaccounted los ntawm qis electronegativity ntawm nitrogen piv nrog cov pa oxygen.
Pom zoo:
Vim li cas toluene reactive dua li benzene?
Toluene thiab Phenol muaj ntau reactive dua benzene vim lawv pab pawg ntxiv electron ceev rau lub nplhaib . Toluene's methyl pawg ntxiv cov electron ceev los ntawm cov nyhuv inductive inductive hauv chemistry, cov nyhuv inductive yogib qho cuam tshuam txog kev sib kis ntawm kev sib koom tsis sib xws ntawm kev sib koom ua ke ntawm cov khoom siv hluav taws xob los ntawm cov saw hlau ntawm atoms hauv cov molecule, ua rau ib tug mus tas li dipole nyob rau hauv ib daim ntawv cog l
Vim li cas anhydrides ntau dua reactive dua amides?
Amides yog qhov ruaj khov tshaj plaws, thiab qhov tsis zoo tshaj plaws, vim tias nitrogen yog ib qho muaj txiaj ntsig pub dawb ntawm electrons rau pawg carbonyl. Anhydrides thiab esters tsis ruaj khov me ntsis, vim tias cov pa oxygen ntau dua electronegative dua nitrogen thiab yog qhov tsis zoo ntawm cov khoom siv hluav taws xob.
Vim li cas acetaldehyde reactive ntau dua formaldehyde?
Thib ob, CH3 pawg hauv acetaldehyde txo qis tus nqi zoo ntawm cabonyl carbon los ntawm +Kuv cuam tshuam rau qee qhov extect uas tsis yog li ntawd nyob rau hauv rooj plaub ntawm formaldehyde, Txij li, Nu nres yog qhov zoo nrog ntau tus nqi zoo.
Vim li cas saturated hydrocarbons tsawg reactive?
Tsawg reactivity ntawm saturated hydrocarbons yog vim muaj ib daim ntawv cog lus ntawm carbon atoms. Paraffins (alkanes) tej zaum yuav muaj cov saw ncaj los yog ceg saw isomers uas muaj cov npe niam txiv sib txawv. Vim li cas saturated hydrocarbons tsawg reactive dua unsaturated hydrocarbons?
Vim li cas australia siv kj es tsis muaj calorie ntau ntau?
Hauv Australia, peb siv kilojoules (kJ) ntsuas seb tib neeg tau txais lub zog npaum li cas los ntawm kev noj zaub mov lossis dej haus. Cov ntsiab lus kilojoule ntawm cov zaub mov nyob ntawm seb cov carbohydrates, cov rog thiab cov proteins uas muaj nyob hauv cov zaub mov, thiab qhov loj me.
