a-Cyanocinnamate esters hnov mob nrog hydrazine muab cov khoom pib ntawm kev sib txuas ntxivuas tom qab ntawd nkag mus rau qhov tawg kom muab azine ntawm carbonyl precursor rau qhov pib ester, es tsis yog intramolecular. aminolysis muab cov pyrazolidinone.
hydrazine ua li cas nrog?
Hydrazine tawg hauv lub cell los tsim nitrogen thiab hydrogen uas khi nrog oxygen, tso dej.
Yuav ua li cas ester teb nrog?
Esters tseem muaj zog txaus los ua kom muaj hydrolysis los tsim cov carboxylic acids, alcoholysis, tsim cov esters sib txawv, thiab aminolysis los tsim amides. Tsis tas li, lawv tuaj yeem cuam tshuam nrog Grignard reagents los ua 3 o cawv thiab hydride reagents los ua 1o cawv los yog aldehydes.
Puas ester react nrog aldehyde?
Ntau zoo li cov kua qaub chlorides, esters tuaj yeem hloov mus rau aldehydessiv cov tsis muaj zog txo cov reagent diisobutylaluminum hydride (DIBALH). Raws li qhia saum toj no, ib qho aldehyde nruab nrab yog tsim tom qab ib tug ester undergoes nucleophilic acyl hloov nrog ib tug hydride.
Yuav ua li cas cov tebchaw ua rau ua tus ester?
Carboxylic acid esters, formula RCOOR′ (R thiab R′ yog cov organic sib txuas ua ke), feem ntau npaj los ntawm cov tshuaj tiv thaiv carboxylic acids thiab cawv nyob rau hauv muaj hydrochloric acid los yog sulfuric acid, txheej txheem hu ua esterification.
