TAILIEUCHUNG - Lecture Organic chemistry - Chapter 11: Alkenes

This chapter presents the following content: structure of the double bond, the sigma bond, the pi bond, orbital energies, how weak is the pi bond? Bond strengths in alkenes, alkenyl hydrogens are relatively acidic, degree of unsaturation, heteroatoms and degree of unsaturation,. | Chapter 11: Alkenes C C Double bond Names: ending ane ene 1. Find longest chain wit both Csp2 carbons in it. Rules: An octene 1 2 3 4 5 6 7 8 4 For example: ethene, propene, butene, etc. 3. Name and # substituents, in alphabetical order 4-Ethyl-3-methyl-3-octene 2. Number the chain with C C close to terminus 1 2 3 4 5 6 7 8 A 3-octene (only the first of the two Csp2 carbons is named by a #) 4 4. Cycloalkenes 1 2 3 CH3 C C 1 2 3-Methylcyclohexene by definition and start such as to give substituents lowest possible numbering 5. Stereoisomers: R R R R cis trans Cis/trans used for 1,2-disubstituted ethenes. 6. For tri- and tetrasubstituted alkenes: E, Z naming. Use R, S priority rules at each sp2-carbon separately, to find yhe higher priority group at each end. E-4-Ethyl-3-methyl-3-octene 1 2 3 4 5 6 7 8 4 Opposite sides: E Same side: Z Colloquial: double bond position R R Internal Terminal R R CH2 8. Substituents: Alkenyl CH2 CH Ethenyl (vinyl) CH2 CH CH2 2-Propenyl (allyl) 9. Exocyclic

• Hoá học
• Organic chemistry
• Lecture Organic chemistry
• Hóa học hữu cơ
• Bài giảng Hóa học hữu cơ
• Structure of the double bond
• The sigma bond
• In this workbook
• experiments are elaborated using small scale glassware and equipments from a Small Lab Kit
• developed at the Department of Chemistry
• Faculty of Science
• Chulalongkorn University in Thailand
• This Small Lab Kit was created as a result of the research project entitled “Chemistry Laboratory Based on Chemical Safety and Pollution Minimization” sponsored by Thai Research Fund (RDG 3 07 2543)
• One of the outcomes of this project is the organic laboratory book entitled “Organic Chemistry Laboratory Based on Chemical Safety and Pollution Minimization” written in Thai by professors from 7 universities in this project
• They compiled
• adjusted and tested the experiments taken from several traditional organic chemistry laboratory books using the prototype of Small Lab Kit
• Currently
• some selected experiments from this Thai organic chemistry laboratory text have further been modified
• rewritten and edited in English as appeared in this workbook
• Some experiments ar
• Ebook Organic chemistry
• Nucleophilic substitution
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