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ESTERIFICATION - PowerPoint PPT Presentation


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ESTERIFICATION. H. H. H. H. O. H O. OH. H. H. H. H. H. H. H. H. H. H. H. H. H. H. H. H. O. THE DOTTED WHITE LINE SHOWS WHERE THE NEW BOND FORMS. C. C. C. C. C. PROPANOIC ACID. ETHANOL. O. C. C. C. C. C. +. HO H. ESTER LINKAGE.

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Presentation Transcript
slide1

ESTERIFICATION

H

H

H

H

O

H O

OH

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

O

THE DOTTED WHITE LINE SHOWS WHERE THE NEW BOND FORMS

C

C

C

C

C

PROPANOIC ACID

ETHANOL

O

C

C

C

C

C

+

HOH

ESTER LINKAGE

ESTERIFICATION IS AN EXAMPLE OF DEHYDRATION SYNTHESIS, WATER IS REMOVED, IS A PRODUCT

ACID PART

ALCOHOL PART

ALCOHOL PART

ACID PART

ETHYL PROPANOATE

slide2

ADDITION (ALKENE)

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

Br

H

H

H

Br

Br

H

H

H

Br

2-BUTENE (CNH2N)

BROMINE

REMEMBER

EACH C HAS 4 BONDS, EACH H ONLY 1, EACH HALOGEN ONLY 1

+

Br2

C

C

C

C

!

REMEMBER:

The halogen MUST bond to carbons where the double bond was located

2,3 DIBROMO BUTANE

SAME AS

C

C

C

C

C

C

C

C

!

2,3 DIBROMO BUTANE, THESE STRUCTURES ARE NOT ISOMERS, THEY ARE THE SAME, THE SINGLE BOND ROTATES.

slide3

ADDITION (ALKYNE)

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

Br

H

H

H

Br

Br

Br

2-BUTYNE(CNH2N-2)

BROMINE

+

Br2

C

C

C

C

THE CIS AND TRANS ISOMERS ARE NOT INTERCHANGEABLE, THERE IS NO ROTATION OF DOUBLE BONDS

2,3 DIBROMO BUTENE

+

C

C

C

C

C

C

C

C

CIS ISOMER

TRANS ISOMER

slide4

SUBSTITUTION (ALKANE)

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

Br

H

H

H

Br

H

H

H

H

H

BUTANE(CNH2N+2)

BROMINE

+

Br2

C

C

C

C

REMEMBER

A MIXTURE OF ISOMERS MAY BE OBTAINED IN SUBSTITUTION.

2 BROMO BUTANE

1 BROMO BUTANE

!

AND

C

C

C

C

C

C

C

C

HBr

slide5

ISOMERS OF C4H10O

H

OH

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

OH

H

C

C

C

C

1-BUTANOL

C4H10O

C

C

O

C

C

C

C

C

C

DIETHYL ETHER

2-BUTANOL

slide6

ISOMERS OF C4H10O

H

OH

H

H

H

H

OH

H

H

H

H

OH

H

H

H

H

H

H

H

PRIMARY

C

C

C

C

1-BUTANOL

C4H10O

TERTIARY

H

1

CH3

1

C

4

C

3

C

2

C

3

CH3

C

2

SECONDARY

CH3

2-BUTANOL

2-METHYL-2 PROPANOL