O o o h ph oh ph o purpose of the problem exploring

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Unformatted text preview: o give the cis- akene. The intermediate is therefore a cis,cis- diene and it may seem remarkable that it should become a trans,trans- diene on elimination. However, when we draw the mechanism for the elimination, we see that there need be no relationship between the stereochemistry of the intermediate and the product as this is an E1 reaction and the cationic intermediate can rotate into the most stable shape before conversion to the aldehyde. OMe OMe OMe OMe H hemiacetal hydrolysis O H HO H2O HO Ph H2O Ph Ph Ph Ph 6 Solutions Manual to accompany Organic Chemistry 2e PROBLEM 6 Sugge...
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