Qhov sib txawv tseem ceeb ntawm imine thiab enamine yog tias imine molecule muaj C=N daim ntawv cog lus whereas enamine molecule muaj C-N daim ntawv cog lus.
Imine thiab enamine molecules yog cov organic tebchaw uas muaj nitrogen thiab carbon atoms sib koom ua ke nrog hydrogen atoms lossis hydrocarbyl pawg txuas nrog carbon thiab nitrogen atom. Ob lub molecules no txawv ntawm ib leeg chemical nyob ntawm cov tshuaj sib txuas ntawm carbon thiab nitrogen atom.
Imine yog dab tsi?
Imines yog cov organic tebchaw uas muaj C=N pab pawg ua haujlwm. Cov pa roj carbon atom hauv pab pawg ua haujlwm no tuaj yeem tsim tau ob qho kev sib cog lus nrog lwm cov khoom siv (vim tias cov pa roj carbon atom tuaj yeem tsim plaub covalent tshuaj bonds). Cov kev hloov pauv no yog pawg alkyl, pawg aryl lossis hydrogen atom thiab ib pawg alkyl / aryl. Txij li thaum nitrogen atom tuaj yeem tsim tau peb daim ntawv cog lus, cov nitrogen atom hauv pawg imine ua haujlwm tuaj yeem tsim tau lwm daim ntawv cog lus nrog lwm cov khoom siv. Qhov hloov pauv no tuaj yeem yog hydrogen atom lossis alkyl / aryl pawg.
Daim duab 01: Cov Qauv Tshuaj Txhuas Txhuas ntawm Imine
Lub sij hawm imine tau qhia los ntawm tus kws tshawb fawb Albert Ladenburg. Yog tias cov pa oxygen atom ntawm aldehyde lossis ketone hloov los ntawm pawg N-R (qhov twg N yog nitrogen atom, thiab R yog ib pawg alkyl / aryl), qhov sib xyaw peb tau txais yog aldimine lossis ketimine. Hauv cov molecules no, yog tias pawg R yog hydrogen atom, peb tuaj yeem muab lub npe sib xyaw ua thawj aldimine lossis thawj ketamine. Txawm li cas los xij, yog tias pawg R yog ib pawg hydrocarbyl, ces qhov sib xyaw ua ke yog cov qauv thib ob.
Feem ntau, txoj kev uas peb siv los npaj ib qho imine yog qhov sib xyaw ua ke ntawm thawj amines lossis aldehydes. Ketones feem ntau siv tsawg dua rau qhov kev npaj no. Lub synthesis ntawm ib qho imine tshwm sim los ntawm nucleophilic ntxiv. Tsis tas li ntawd, peb tuaj yeem siv lwm txoj hauv kev xws li condensation ntawm carbon acids nyob rau hauv lub xub ntiag ntawm nitroso tebchaw, lub cev qhuav dej ntawm hemiaminals, thiab lwm yam.
Enamine yog dab tsi?
Enamines yog cov organic tebchaw uas muaj pawg amine nyob ib sab ntawm C=C ob daim ntawv cog lus. Ib qho enamine yog tsim los ntawm condensation ntawm ib qho aldehyde los yog ketone nrog ib tug thib ob amine. Cov molecules no suav hais tias yog nitrogen analogues ntawm enols.
Daim duab 02: Cov Qauv Tshuaj Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas
Enamines hnov zoo ib yam li ntawm enolate anions. Thaum piv rau enols thiab enolates, cov nucleophilic reactivity ntawm enamines yog nruab nrab ntawm cov enols thiab enolates. Qhov nruab nrab nucleophilicity ntawm enamines yog tshwm sim los ntawm qhov tsawg electronegativity ntawm nitrogen atom piv rau cov pa atom hauv enols thiab enolates. Txawm li cas los xij, qhov reactivity ntawm enamines txawv ntawm ib leeg raws li pawg alkyl txuas rau lub molecule.
Qhov txawv ntawm Imine thiab Enamine yog dab tsi?
Imine thiab enamine yog nitrogen-muaj cov organic tebchaw. Imines yog cov organic tebchaw uas muaj C=N ua haujlwm pab pawg thaum enamines yog cov organic compounds uas muaj ib pawg amine nyob ib sab ntawm C=C ob daim ntawv cog lus. Qhov sib txawv tseem ceeb ntawm imine thiab enamine yog tias imine molecule muaj C=N daim ntawv cog lus thaum enamine molecule muaj C-N daim ntawv cog lus.
Cov infographic hauv qab no teev qhov sib txawv ntawm imine thiab enamine nyob rau hauv daim ntawv tabular.
Summary – Imine vs Enamine
Imine thiab enamine molecules sib txawv ntawm ib leeg chemical nyob ntawm cov tshuaj sib txuas ntawm carbon thiab nitrogen atom. Qhov sib txawv tseem ceeb ntawm imine thiab enamine yog tias imine molecule muaj C=N daim ntawv cog lus whereas enamine molecule muaj C-N daim ntawv cog lus.
