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oxidation of alcohols
primary alcohol → aldehyde → hydrate → carboxylic acid (under wet conditions, in dry stops at aldehyde)
secondary alcohol → ketone (always)
tertiary alcohol → not responsive to oxidation
Jones reagent (wet Cr6+)
CrO3, H2O, H2SO4 → H2CrO4 (chromic acid)
dry Cr6+
CrO3 + 2 equiv. of pyridine
PCC (pyridinium chlorochromate) = protonated pyridine + ClCrO3-
PDC (pyridinium dichromate) = 2 equiv. protonated pyridine + Cr2O72-
swern oxidation
dimethiyl sulfoxide O=S-(CH3)2 + oxalyl chloride C2O2Cl2
Base: triethylamine N(CH2CH3)3
good electron donors
anion, uncharged N, P, S, hindered bases (do SN2/E2)
poor electron donors
lack qualities of good electron donors (do NOT do SN2/E2, can potentially do SN1/E1)
nucleophile
donates electrons
electrophile
accepts electrons
have the leaving group on them