310_6 - Organic Lecture Series CH 310 N LECTURE 6 Textbook...

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Organic Lecture Series 1 CH 310 N LECTURE 6 Textbook Assignment: Chapter 16 Aldehydes & Ketones Homework (for credit): Problem set 2 posted Today’s Topics: Carbonyl Compounds intro Notice & Announcements: Exam rooms assigned Organic Lecture Series 2 Naltrexone opioid receptor antagonist used primarily in the management of alcohol dependence and opioid dependence. 3 Example of a drug which has a cyclopropane moiety: •Sedation •Analgesia •Euphoria •Constipation (GI) •Respiratory depression •Addiction liability
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Organic Lecture Series 3 Aldehydes Aldehydes And And Ketones Ketones Organic Lecture Series 4 The Carbonyl Group The next units cover the physical and chemical properties of classes of compounds containing the carbonyl group, C=O ¾ aldehydes and ketones (Chapter 16) ¾ carboxylic acids (Chapter 17) ¾ acid halides, acid anhydrides, esters, amides (Chapter 18) ¾ enolate anions (Chapter 19)
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Organic Lecture Series 5 Physical Properties Physical Properties Oxygen is more electronegative than carbon (3.5 vs 2.5) and, therefore, a C=O group is polar – aldehydes and ketones are polar compounds and interact in the pure state by dipole-dipole interaction – they have higher boiling points and are more soluble in water than nonpolar compounds of comparable molecular weight Organic Lecture Series 6 – the functional group of an aldehyde is a carbonyl group bonded to a H atom and a carbon atom – the functional group of a ketone is a carbonyl group bonded to two carbon atoms Ethanal (Acetaldehyde) O CH 3 Methanal (Formaldehyde) O HCH Propanone (Acetone ) O 3 CCH 3
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Organic Lecture Series 7 Nomenclature Nomenclature IUPAC names: • the parent chain is the longest chain that contains the functional group • for an aldehyde, change the suffix from -e to -al al • for an unsaturated aldehyde, change the infix from -an an - -en en - ; the location of the suffix determines the numbering pattern • for a cyclic molecule in which -CHO is bonded to the ring, add the suffix - carbaldehyde carbaldehyde Organic Lecture Series 8 H O 3-Methylbutanal 2-Propenal (Acrolein) (2 E )-3,7-Dimethyl-2,6-octadienal (Geranial) 1 2 3 4 5 6 7 8 H O H O CHO HO Cyclopen tane-
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This note was uploaded on 11/21/2011 for the course CH 51455 taught by Professor Colapret during the Spring '11 term at University of Texas.

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310_6 - Organic Lecture Series CH 310 N LECTURE 6 Textbook...

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