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Flashcards in Alkenes Reactions Deck (33):
1

How can an alkene produce a hologenoalkane

HX polar conditions or HX peroxides

2

What is the Markovnikov rule

The favoured product is the hydrogen attached to the least sub carbon

3

What sort of reaction is the addition of HX with peroxides

Free radical
Anti markovnikov

4

What forms a dibromoalkane from alkene

Br2

5

What addition is bromination

Anti

6

What does bromination produce a racemic mixture

The bromide ion can attack either side of the bromonium ion

7

What conditions form a bromohydrin from alkene

Br2/ H2o

8

What step is reversible in addition of bromine water

1st and 3 rd

9

How can an alcohol be formed from an alkene

Hydroxylation - H2o and acid catalyst
Oxymercuration - mercury accetate
Hydroboration - bh3, h2o2

10

Why is hydroxylation of alkene not the favoured method for producing an alcohol

All steps are reversible

11

In oxymercuration what is required at each step

Mercury acetate
Water
Sodium borahydride

12

What is the product of hydroboration

3 mol of alcohol from 3 mol of alkene and 1 mol bh3

13

What sort of addition is hydroboration

Anti markovnikov

14

At which carbon does the BH2 addition occur in hydroboration

The least hindered

15

What are the reagents for epoxidation

Percarboxylic acid and water and acid

16

What is formed in epoxidation

Trans diol

17

What colour change is observed in dihydroxylation

Purple to brown +7 to +4

18

What is the product of dihrdoxylation

Syn diol

19

What are the reagents of dihydroxylation

KMnO4 and water

20

What is another name for dihydroxylation

Baeyer test

21

What is another reagent for dihydroxylation

OsO4 and NaHSO3

22

What is the name of the intermediates produced in dihydroxylation

Manganate Ester and osmate ester

23

What is the specificity / selectivity of dihydroxylation

Stereospecific

24

What are the reagents of ozonlysis

O3 and Me2S

25

What is the name of the ozonlysis mechanism

Criedge

26

What sort of reaction is ozonlysis

1,3 dipolar addition

27

What is the name of the intermediate in ozonlysis

Molozonide

28

What is produced in ozonolysis

Me2SO and Cabonyls

29

What sort of reaction is diels alder

4+2

30

What are the reagents for Stille

Pd catalyst, tributyl tin and vinylbromide or bromobemzene

31

What does Stille with bromobenzene give

The Br is replaced by the carbon chain

32

What are the reagents of Suzuki

Pd boronic acid and bromoalkane

33

What does the olefin reaction give

2 alkenes