reagents needed for alkene addition reactions

hydrohalogenation

H-X ex. H-Br

• has carbocation intermediate

what does adding ROOR (peroxide) do in hydrohalogenation?

makes it anti markovinikov, halogen on least substituted side

acid catalyzed hydration

diluted acid like h30 or h2so4?

• has carbocation intermediate

• follows markovinikov

oxymercuration-demercuration

1. Hg(oac0)2 h20

2. NaBh4

• follows markovinokov

• is anti stereoselectivity

hydroboration oxidation

1. BH3 , THF

2. H2o2, naoh

   • is anti markovinikov

   • stereoselectivity is syn

catalytic hydrogenation

1. H2

2. metal catalyst like pd, pt, ni

   • is syn addition

   • exothermic reaction

halogenation

just halogen ex, br2, cl2

• anti stereoselectivity

halohydrin

halogen + water or alcohol

is anti markovinikov and anti stereoselectivity

anti-dihydroxylation

treated with aproxy acid (RCO3H)

• makes a epoxide

• adds two OH that are anti stereoselectivity

syn-dihydroxylation

1. Oso4

2. Nahso3

   or

   1. Kmno4 (cold diluted)

   2. Naoh

   • adds two OH with syn stereoselectivity

oxidative cleavage

used ozone or kmno4 but under (hot and concentrated conditions)

makes ketones and aldehydes

• split double bond and had in two oxygens on both sides

what happens when ur doing a acid catalyzed reaction and add concentrated acid instead of dilute?

favours formation of OH —> Alkene

using diluted does alkene to an OH.