A stereospecific cov tshuaj tiv thaiv yog ib qho uas, thaum ua nrog cov khoom siv stereoisomeric pib, muab cov khoom lag luam los ntawm ib qho reactant uas yog stereoisomer ntawm cov khoom los ntawm lwm tus.
Koj txhais li cas los ntawm cov tshuaj tiv thaiv stereospecific thiab stereoselective?
Ib lub tshuab stereospecific qhia txog qhov tshwm sim ntawm cov tshuaj stereochemical ntawm qhov muab cov tshuaj reactant, whereas cov tshuaj tiv thaiv stereoselective xaiv cov khoom lag luam los ntawm cov khoom tsim muaj los ntawm tib yam, tsis yog cov txheej txheem tshwj xeeb ua rau ntawm cov tshuaj reactant muab.
Dab tsi yog qhov piv txwv stereospecific tshuaj tiv thaiv?
Ib qho piv txwv ntawm cov tshuaj tiv thaiv stereoselective yog qhov txo ntawm hex-3-yne rau hex-3-ene [1]. Thaum siv H2 / Lindlar catalyst, cov khoom tseem ceeb tsim yog Z-isomer ntawm alkene [1]. Txawm li cas los xij, thaum Na / NH3 siv rau kev txo qis, cov khoom tseem ceeb dhau los ua E-isomer ntawm alkene hloov [1].
Yuav ua li cas koj thiaj paub yog tias cov tshuaj tiv thaiv tsis zoo?
Xav txog qhov stereochemical nta ntawm cov reactants los txiav txim stereospecificity los yog tsis muaj. o Yog tias lwm qhov stereoisomer ntawm cov reactant yuav muab cov khoom zoo tib yam hauv qhov sib piv, ces cov tshuaj tiv thaiv tsis yog stereospecific. o Yog tias qhov sib txawv stereoisomer ntawm cov reactant lossis reagent muab ib qho stereoisomerically …
txhais tau tias stereospecific?
: relating to, being, or effecting a reaction or process nyob rau hauv uas txawv stereoisomericpib cov ntaub ntawv tsim cov khoom sib txawv stereoisomeric stereospecific polymerization stereospecific catalysts.
