Sodium borohydride Nws kuj yog ib qho yooj yim uas, txawm hais tias LiAlH4 muaj zog txaus los txo cov C=C Page 2 ntawm conjugated carbonyl compound, NaBH4 tsis yog; yog li pawg carbonyl tuaj yeem txo qis yam tsis muaj alkene.
NaBH4 ua dab tsi rau alkenes?
Kev siv cov tsis hloov pauv sodium borohydride yuav ua rau 1, 4 conjugate ntxiv cov tshuaj tiv thaiv, saturating alkene, nrog txo qis tom qab ntawm ketone rau ib qho cawv. Kev siv lithium aluminium hydride yuav muab tib yam khoom raws li kev siv cov khoom siv tsis hloov pauv sodium borohydride, ua raws li tib txoj kev txo qis.
NaBH4 puas txo ob daim ntawv cog lus?
LiAlH4 txo ob daim ntawv cog lus tsuas yog thaum ob daim ntawv cog lus yog Beta-arly, NaBH4 tsis txo ob daim ntawv cog lus. Yog tias koj xav tau koj tuaj yeem siv H2 / Ni kom txo tau ob daim ntawv cog lus.
YPuas alkene txo los ntawm sodium borohydride?
Alkenes thiab alkynes tau txo qis rau cov alkanes sib raugsiv sodium borohydride thiab acetic acid nyob rau hauv muaj me me ntawm palladium catalyst. … Cov tshuaj tiv thaiv feem ntau them rau kev hloov pauv rau cov khoom lag luam alkane ntawm 98% lossis ntau dua li ntawm 15 min.
Can LiAlH4 txo alkenes?
Lithium aluminium hydride tsis txo cov alkenes yooj yim lossis arenes. Alkynes tsuas yog txo yog tias ib pawg cawv nyob ze. Nws tau pom tias LiAlH4 txo qis ob daim ntawv cog lus hauv N-allylamides.
