3Alkenes - Alkenes CnH2n sp2 hybridized carbons p p sp2 s H...

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Alkenes sp 2 hybridized carbons sp 2 p C C H H H H C n H 2n s p
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Alkenes no rotation at C = C geometric isomers Cl Cl Cl H Cl Cl cis - H Cl trans -
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Nomenclature 1. Longest chain with C = C is parent. 2. C numbered from end nearest to C = C . 3. Designate cis - or trans - if necessary. 4. Name substituents. 5. Replace ane with ene ending. 6. If more than one C = C , give smallest numbers and call diene or triene .
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Nomenclature 1 2 3 4 5 6 hex ene 1,3- 5-methyl-3-propyl- trans- 1 2 3 4 5 6 8 2- octene trans- 2- octene cis- 7 3-propyl 5-methyl adi
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Alkene - reactions π electrons Lewis Base e - pair donor nucleophile Lewis Base e - pair acceptor electrophile Lewis Acid
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Addition Reactions + H rxn = bonds broken - bonds formed H rxn = ( σ -bond + π -bond) - (2 σ -bonds) exothermic < 0
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Addition of HX + reaction mechanism Lewis base Lewis acid π electrons H + nucleophile electrophile H + + Cl - C C H 3 C H H H C C H 3 C H H H H Cl C C H 3 C H H H Cl H
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Addition of HX step 1 carbocation carbocation 2 o 1 o C C H H H H 3 C + H-Cl H + + Cl - H +
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This note was uploaded on 12/21/2011 for the course PHIL 102 taught by Professor Rug during the Fall '11 term at University of Illinois, Urbana Champaign.

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3Alkenes - Alkenes CnH2n sp2 hybridized carbons p p sp2 s H...

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