Muaj ob hom txheej txheem rau alkyl halides - SN1 thiab SN2. … Thawj thiab theem nrab alkyl halides tuaj yeem nkag mus rau SN2 mechanism, tab sis tertiary alkyl halides hnov mob tsuas yog qeeb heev. SN1 mechanism yog a ob-theem mechanism qhov twg thawj theem yog tus nqi txiav txim siab kauj ruam.
Qhov twg alkyl halide muab SN1?
Vim C-I daim ntawv cog lus yog qhov tsis muaj zog ntawm tag nrho cov C-X daim ntawv cog lus, yog li, rerf-butyl iodide dhau SN1 cov tshuaj tiv thaiv yooj yim tshaj plaws.
Qhov twg tsis dhau SN1 cov tshuaj tiv thaiv?
Teb: Nonpolar cov kuab tshuaj tsis siv rau hauv SN1 lossis SN2 cov tshuaj tiv thaiv vim lawv tsis tuaj yeem yaj cov ionic reagents xav tau rau kev hloov pauv nucleophilic. SN2 cov tshuaj tiv thaiv nrog muaj zog nucleophiles reacting sai.
Puas yog theem nrab alkyl halide nkag mus rau SN1?
Ntau cov carbocations thib ob yog qhov ruaj khov, yog li nws yuav raug Sn1 cov tshuaj tiv thaiv. Tab sis Sn2 cov tshuaj tiv thaiv kuj muaj txiaj ntsig zoo vim tias muaj kev cuam tshuam tsawg heev.
Do aryl halides undergo SN1 lossis SN2?
Txawm hais tias aryl halides tsis tau txais cov tshuaj tiv thaiv nucleophilic hloov pauvlos ntawm SN1 thiab SN2 cov txheej txheem, aryl halides uas muaj ib lossis ntau pawg nitro ortho lossis para rau halogen un-dergo nucleophilic hloov pauv. kev tshwm sim nyob rau hauv cov mob me me.
