E2 Elimination of 1-Chlorooctadecane

The reaction takes place in a single step in which the strong base terf-butoxide abstracts a proton from C-2 of the alkyl halide concurrent with loss of chloride from C-1. We can omit writing in the equation because it appears on both sides of the equation (a spectator ion ). 

Potential energy diagram tor E2 elimination ot ethyl chloride. 

Use curved arrows to illustrate the electron flow in the chloroflurocarbon dehydrohalogenation of Problem 5.23. 

Two aspects of dehydrohalogenation, both based on the stabilization of double bonds by alkyl groups, are accommodated by the E2 mechanism. As shown earlier (Section 5.14), the reaction  

Chapter 5 Structure and Preparation of Alkenes Elimination Reactions 

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