Chemistry Exam 2 alkene reactions

alkene reactions

electrophilic addition reactions

Hydrogen-Halide addition reaction

H goes to other Hs, Markovnikov’s rule

Hammond postulate

the transition state is more similar in structure to the species to which it is more similar in energy.

Acid catalyzed hydration of alkenes without rearrangement

this involves a bridging mercurinium ion Hg2+, so there is not rearrangement

Hyrdoboration oxidation

1st step BH3 or THF, 2nd step HO, H2O2, antimarkovnikov concerted reaction, oxidation involves hydrogen peroxide, no carbocation rearrangement.

Di halide addition

concerted no rearrangement

addin water after Di halide addition

can add ether, OH or even another halide, follows markovnikovs

epoxidation

requires peroxyacids with two Os, concerted butterfly mechanism, forms O double bonded to both Carbons that were in the alkene, stereo specific

oxonlysis

uses ozone to split an alkene, ozone has 3 oxygens

addition of H2

syn, concerted addition