Give the major product(s) (indicating stereochemistry where appropriate) of each of the following reactions. он a)...

Question

Question

он a) 2. 3. H (any strong acid) 1. HBr(1 equiv) MgBr, then 20 2. Mg then H20 OH c) 2. MeMgBr, then H20 3. PBr3, pyridine 4. N

Give the major product(s) (indicating stereochemistry where appropriate) of each of the following reactions.

Answer 1

Answer #1

Peracids gives epoxide with alkene and ring opening of unsymmetrical epoxide with Grignard reagent occuOc at least substitited side via SN2 manner.

Addition of HBr to alkyne follows Markonikoff rule.

Hydroboration-oxidation by Anti-Markonikoff rule gives less substitited alcohol via syn addition of water stereospecifically.

SN2 reaction results inversion of configuration.

1H20 o t el m20 Sa by PCo3 it e ) 13H3

Answer 2

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