Kev hloov pauv ntawm hydride ion mus rau pawg carbonylyog qhov qeeb tshaj plaws lossis tus nqi txiav txim siab theem ntawm cov tshuaj tiv thaiv cannizzaro. Cov tshuaj tiv thaiv cannizzaro yog pib los ntawm nucleophilic nres ntawm hydroxide ion mus rau carbonyl carbon ntawm ib qho aldehyde molecule los ntawm kev muab hydrate anion.
Nws yog kauj ruam qeeb tshaj plaws hauv Cannizzaro cov tshuaj tiv thaiv?
Hydride hloov yog kauj ruam qeeb tshaj.
txhais tau li cas los ntawm tus nqi txiav txim siab cov kauj ruam ntawm cov tshuaj tiv thaiv?
Tus nqi txiav txim siab yog theem qeeb tshaj ntawm cov tshuaj tiv thaiv tshuaj uas txiav txim siab qhov nrawm (tus nqi) uas tag nrho cov tshuaj tiv thaiv ua tiav. Tus nqi txiav txim kauj ruam tuaj yeem muab piv rau lub caj dab ntawm lub funnel.
Cov tshuaj tiv thaiv Cannizzaro yog dab tsi sau cov tshuaj tiv thaiv?
Cov tshuaj tiv thaiv Cannizzaro yog redox cov tshuaj tiv thaiv uas ob lub molecules ntawm aldehyde tau tshwm sim los tsim cov cawv thawj thiab carboxylic acid siv lub hauv paus hydroxide. … Hauv cov txheej txheem no tus dianion hloov mus rau carboxylate anion thiab aldehyde rau alkoxide.
Dab tsi xav tau rau Cannizzaro cov tshuaj tiv thaiv?
Cov tshuaj tiv thaiv Cannizzaro yog qhov tshuaj tiv thaiv tseem ceeb rau kev tsim cov cawv thiab carboxylic acids los ntawm ib qho tshuaj tiv thaiv. Txhawm rau kom nws tshwm sim, peb xav tau tsis yog-enolizable aldehyde, uas yog aldehyde uas tsis muaj alpha hydrogen atoms, thiab ib puag ncig yooj yim. … Qhov no ces tsim ib qho cawv thiab carboxylic acid.
