Tang 06 condensations-ethers-esters-amides 2

CONDENSATION REACTIONS (ETHERS, ESTERS, & AMIDES)

CONDENSATION REACTIONS These reactions synthesize new functional group as a result of the release of a water molecule ( condensation ). Condensation Reactions

Involve 3 molecules… ,[object Object],[object Object],[object Object],CONDENSATION REACTIONS

a) Ethers ,[object Object],[object Object],ETHERS

[object Object],[object Object],[object Object],[object Object],ETHERS

Example #1 ,[object Object],methoxyethane ETHERS

[object Object],[object Object],[object Object],[object Object],ethylmethyl ether diethyl ether ETHERS

Example #2 ,[object Object],CH 3 CH 2 CH 2 OH + CH 3 CH 2 CH 2 OH  H 2 SO 4 CH 3 CH 2 CH 2 OCH 2 CH 2 CH 3 + H 2 O propoxypropane ETHERS

Properties of Ethers ,[object Object],Homework: p46 #11 p48 #5, 7 ETHERS

b) Esters ,[object Object],[object Object],[object Object],Conc. H 2 SO 4 Heat ESTERS

[object Object],[object Object],[object Object],ESTERS

Example #3 ,[object Object],[object Object],butanoic acid ethanol  CH 3 CH 2 CH 2 COOCH 2 CH 3 + H 2 O ethyl butanoate Conc. H 2 SO 4 Heat ESTERS O O II

Example #4 ,[object Object],+ Conc. H 2 SO 4 Heat propyl benzoate ESTERS -C-C-C-OH H H H H H H H l l l l l l C C C C C C H H H H H C HO O C C C C C C H H H H H C O O -C-C-C- H H H H H H H l l l l l l

Properties of Esters ,[object Object],[object Object],Homework: p66 #11, 12 p68 # 1- 4 ESTERS

c) Amides ,[object Object],[object Object],AMIDES

[object Object],[object Object],[object Object],AMIDES

Example #5 ,[object Object],[object Object],[object Object],ethanoic acid ammonia CH 3 CONH 2 + H 2 O CH 3 CH 2 CH 2 CONHCH 3 + H 2 O ethanamide water butanoic acid methylamine N-methyl butanamide water AMIDES

Example #6 ,[object Object],[object Object],[object Object],N-ethyl-N-methyl butanamide N,N-diethyl butanamide AMIDES N O ll N O ll

Properties of Amides ,[object Object],[object Object],Homework: p76 #4 - 6 p79 #2 - 5 AMIDES

Tang 06 condensations-ethers-esters-amides 2

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Tang 06 condensations-ethers-esters-amides 2