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Faculty of Allied Medical Sciences

Faculty of Allied Medical Sciences. Organic chemistry. ( MGOC-101). Classification and nomenclature of organic compound. Supervision: Prof.Dr.Shehata El-Sewedy Dr.Fatma Ahmed. Outcomes. By the end of this lecture, the students will be able to.

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Faculty of Allied Medical Sciences

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  1. Faculty of Allied Medical Sciences Organic chemistry (MGOC-101)

  2. Classification and nomenclature of organic compound Supervision: Prof.Dr.Shehata El-Sewedy Dr.Fatma Ahmed

  3. Outcomes By the end of this lecture, the students will be able to 1-Recognize classification and nomenclature of organic compound 2-Known the different functional group of organic chemistry 3- learn rule for aromaticity 4- known chemical bonds and bond fission 6-Differentiate between aliphatic and aromatic compound

  4. Organic compounds contain only two elements hydrogen and carbon.

  5. a.Aromaticcompounds

  6. *Aromatic compounds must have:- 1-High degree of unsaturation 2-Planar arrangement of Pz orbitals to make resonance 3-High degree of stability due to conjugation 4-Resistance for addition reactions 5-Cyclic *6-Obey Hückel Rule:- This is rule for aromaticity

  7. Aromaticity Hückel Rule:- This is rule for aromaticity The number of π- electrons= 4n+2 Where n=0, 1, 2, 3, ………Integral number

  8. كفايييييييييييييييييييييىىىىىىىىىىىىىىىهكفايييييييييييييييييييييىىىىىىىىىىىىىىىه

  9. b.Aliphaticcompounds

  10. IUPAC SYSTEM Prefix+ Infix + Suffix 1-Prefix Gives the number of carbon atoms of the parent chain

  11. 2-Infix Gives the nature of carbon –carbon Bond in the parent chain.

  12. 3-Suffix Gives the class type of organic compound

  13. Ex: CH3-CH3 Ethane Butanal Pentanoic THE STRUCTURAL THEORY OF ORGANIC CHEMISTRY Atoms or elements in organic compound can form afixed number of bonds (valence ):

  14. Carbon atoms can be bonded to each other by: ( δ) (δ, π) (δ,2π)

  15. Hybridization It means mixing of atomic orbitals in the atom to generate new atomic orbitals called hybrid orbitals

  16. Bond polarity Polar bond: bond between two different atoms such as H-Cl , H-F Non polar bond: bond between two same elements such as H-H, F-F Bond fission It is the breaking of bond

  17. There two types of bond fission 1)Homolytic fission One electron to each atom so homolytic fission gives free radicals and it occurs in presence of heat, light or peroxide 2)Heterolytic fission The two bond electrons move to one atom so heterolytic fission gives anion & cation and it occurs in presence of polar solvent

  18. Quiz time

  19. Which of the following structures are aromatic according to Hückel'srule? A B Mention types of bond fission?

  20. Student Question

  21. 1-Which of the following structures are aromatic according to Hückel'srule? A B C D E

  22. 2-Mention types of bond fission? 3-Explain and give example A- valence B-Bond polarity C-Bond fission

  23. Recommended textbooks: 1-Raymond Chang. Chemistry: An introduction to organic chemistry. 10th ed. 2009 2008 2-Zumdehl. Organic Chemistry; study guide and solution manual. 2008

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