Dienes and the Allyl System 2p Orbitals in Conjugation

9 The Chemical Consequences of Conjugation Addition Reactions of Conj ugated Dienes 

CONJUCATEDALKENES The different colors in fruits and vegetables arise from the different conjugated alkenes that are produced by plants. 

CHAPTER 12 Dienes and the Allyl System 2p Orbitals in Conjugation 

Since chemists are not physicians, we shall scarcely benefit by their art, except by making the physician a chemist. 

FIGURE 12,1 Some conjugated and unconjugated double bonds. 

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