13_3 Esters.ppt.ppt

1 chapter13carboxylicacids esters amines andamides 13 3esters 2 esters inanester thehinthecarboxylgroupisreplacedwithanalkylgroup o ch3 c o ch3estergroup 3 esterificationisthereactionofacarboxylicacidandalcoholinthepresenceofanacidcatalysttoproduceanester o h ch3 c oh h o ch2 ch3o ch3 c o ch2 ch3 h2oethylacetate anester esterification 4 writetheequationforthereactionofpropanoicacidandmethanolinthepresenceofanacidcatalyst learningcheck 5 writetheequationforthereactionofpropanoicacidandmethanolinthepresenceofanacidcatalyst o h ch3 ch2 c oh h o ch3propanoicacidmethanolo ch3 ch2 c o ch3 h2o solution 6 esterproducts aspirinisusedtorelievepainandreduceinflammation isanesterofsalicylicacidandaceticacid oilofwintergreenisusedtosoothesoremuscles isanesterofsalicylicacidandmethanol copyright 2009bypearsoneducation inc 7 namingesters thenameofanestercontainsthenamesofthealkylgroupfromthealcohol thecarbonchainfromtheacidwith ateending methylethanoate acetate o ch3 o c ch3iupac methylethanoatecommon methylacetate namingesters estersarenamedwiththealkylgroupofthealcohol andthesalt ate ofthecarboxylicacid 8 frommethanol methylalcohol fromethanoicacid aceticacid 9 estersinplants estersgivepleasantfragrancesandflavorstomanyfruitsandflowers 10 learningcheck givetheiupacandcommonnamesofthefollowingcompound whichisresponsiblefortheflavorandodorofpears o ch3 c o ch2 ch2 ch3 11 givetheiupacandcommonnamesofthefollowingcompound whichisresponsiblefortheflavorandodorofpears from1 propanolo ch3 c o ch2 ch2 ch3propylethanoate iupac propylacetate common solution 12 drawthestructureofthefollowingcompounds a 3 bomobutanoicacidb ethylpropionoate learningcheck 13 solution a 3 bromobutanoicacidbr ch3 ch ch2 coohb ethylpropionoateo ch3 ch2 c o ch2 ch3 14 inacidhydrolysisanesterreactswithwatertoproduceacarboxylicacidandanalcohol anacidcatalystisrequired o h h c o ch2 ch3 h2oo h c oh h o ch2 ch3 acidhydrolysisofesters 15 basehydrolysisorsaponification isthereactionofanesterwithastrongbase producesthesaltofthecarboxylicacidandanalcohol o ch3 c o ch2 ch3 naoho ch3 c o na ho ch2 ch3saltofcarboxylicacidalcohol basehydrolysis saponification 16 basehydrolysisoffattyacidsproducessoaps 17 cleaningactionofsoap asoapcontainsanonpolarendthatdissolvesinnonpolarfatsandoils andapolarendthatdissolvesinwater formsgroupsofsoapmoleculescalledmicellesthatdissolveinwaterandarewashedaway copyright 2009bypearsoneducation inc 18 writetheorganicproductswhenmethylacetatereactswitha waterandanacidcatalyst b koh learningche