exam 3 reactions

Hydrogenation;syn or anti

Syn

Hydrogenation: characteristics

H2 and Pd/Pt

Halo acid more or less substituted

Less so + goes on more substituted

Hydration characteristics

Acid and water

Hydrogenation anti or syn

both

Hydrogenation (H+ and H20) Marcov or anti

Marcov , + on more substituted

Hydration using BH3: marcov or anti marcov

Anti, B on less sub and H on more sub. B is then replaced with OH

Hydroboration characteristic

BH3, one step and B is replaced with OH

Hydroboration anti or syn

Syn

Halogenation syn or anti

Anti

Halogenation characteristics

X-X

Epoxied look like

RCO3H

Epoxied anti or syn

Anti

Epoxied overview

Does same thing as cyclopropination but with O

Adds 2 OH groups anti

Common reactant for epoxied

MCPBA

Dihydroxilation reactant

OsO4

Dihydroxilation syn or anti

Syn

Dihydroxilation over view

Add 2 OH groups syn

Permnganate characteristics

KMnO4

Permanganate syn or anti

Syn

Permanganate over view

Syn addition of 2 OH groups

Ozonolysis reactant

O3

Ozonolysis over view

Cleavage of double bond and replace with =O

How to make an alkye

Use geminal or viscinal dihalide and string base

What does NaNH2 do to Alkynes

Deprotonates them so the carbon chain can be lengthened

What does lindlars cat do

Turns alkyne into cis alkene and it stays there

How to get trans alkene from alkyne

Use Na in NH3

What is the difference between Na, NH3 and NaNH2

Na, NH3 makes Trans alkenes and NaNH2 rips off H

What happens when you mix an alkyne, H2SO4, H2O, and HGSO4

You get a keytone from an enol

How to go from an alkyne to a Keytone

H2SO4, H2O and HgSO4

In Hydroboration-oxidation of alkynes, do you end with an OH and H added on

No, it taunomerizes and turns into a keytone

In Hydroboration of Layne’s, do we use BH3

No, we use a more substituted B

In alkynes, what does RBH form

An aldehyde

What happens in oxonolysis of alkynes

You cleavage the bond and get an =O and OH