Intermediate koom nrog Reimer-Tiemann cov tshuaj tiv thaiv yog a carbene .
Dab tsi yog qhov nruab nrab hauv Reimer-Tiemann cov tshuaj tiv thaiv?
- Hauv qhov tshuaj tiv thaiv chloroform thawj zaug tshwm sim nrog sodium hydroxide los tsim dichlorocarbeneuas yog qhov nruab nrab ntawm cov tshuaj tiv thaiv no .
Dab tsi yuav yog qhov nruab nrab tsim tawm thaum Reimer Tieman's Formylation cov tshuaj tiv thaiv?
THE REIMER–TIEMANN REACTION
Cov kauj ruam ntawm cov tshuaj tiv thaiv yog (1) tsim cov dichlorocarbene, raws li qhia hauv Piv txwv 4.22; (2) nucleophilic cov tshuaj tiv thaiv ntawm cov phenoxide nrog cov electrophilic carbene los ua intermediate 4-34; thiab (3) hydrolysis los tsim cov aldehyde 4-35 .
Tus neeg nruab nrab twg koom nrog cov tshuaj tiv thaiv?
Ib qho tshuaj tiv thaiv nruab nrab lossis nruab nrab yog qhov chaw molecular uas yog tsim los ntawm cov reactants (los yog cov neeg nruab nrab ua ntej)thiab reacts ntxiv kom muab cov khoom ncaj qha ntawm cov tshuaj tiv thaiv. Feem ntau cov tshuaj tiv thaiv yog cov kauj ruam, uas yog lawv siv ntau tshaj ib theem pib kom tiav .
Dab tsi yog qhov cuam tshuam nruab nrab uas ua raws txoj cai octet?
Kev sib koom ua ke hauv carbon dioxide (CO2): tag nrho cov atoms yog ib puag ncig los ntawm 8 electrons, ua tiav txoj cai octet .
Reimer tiemann reaction mechanism (heterocyclic)
