Q.30-5
Question
What stereochemistry would you expect for the product of the Diels–Alder reaction between (2E,4E)-2,4-hexadiene and ethylene? What stereochemistry would you expect if (2E,4Z)-2,4-hexadiene were used instead?
Step-by-Step Solution
Verified Answer
In both the cases the same isomer will produce, which follows aromatic transition state and the cis form will be the final product.
1The formation of final product in both cases.
The formation of final product will be cis 2,4-hexadiene. This can be observed by following figure given below:
2The stereochemistry expected.
In both the cases same product get formed. Since this is thermal superficial reaction, it requires 6 electrons aromatic transition state. Thus both case same isomer i.e, cis will get formed. (As shown in figure)
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