(c) Diels-Alder reactions are a highly effective way to synthesise stereospecifically fused cyclic structures. (1) Using suitable diagrams, curly arrows and/or reaction schemes, explain why the reaction between cyclopentadiene and maleic anhydride favours formation of the endo product. (ii) If the reaction in part (i) were conducted using furan instead of cyclopentadiene, what difference would you observe in the product/s, with respect to their stereochemistry? (No need to draw reaction mechanisms) (iii) Draw the stereospecific 3D structure of the product formed during the Diels-Alder reaction below. (No need to show the reaction mechanism) Нeat Br Br (Figure Q11ciii)

Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
Chapter15: Radical Reactions
Section: Chapter Questions
Problem 11E
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(c) Diels-Alder reactions are a highly effective way to synthesise
stereospecifically fused cyclic structures.
(1) Using suitable diagrams, curly arrows and/or reaction schemes,
explain why the reaction between cyclopentadiene and maleic
anhydride favours formation of the endo product.
(ii) If the reaction in part (i) were conducted using furan instead of
cyclopentadiene, what difference would you observe in the
product/s, with respect to their stereochemistry? (No need to draw
reaction mechanisms)
(iii) Draw the stereospecific 3D structure of the product formed during
the Diels-Alder reaction below. (No need to show the reaction
mechanism)
Нeat
Br
Br
(Figure Q11ciii)
Transcribed Image Text:(c) Diels-Alder reactions are a highly effective way to synthesise stereospecifically fused cyclic structures. (1) Using suitable diagrams, curly arrows and/or reaction schemes, explain why the reaction between cyclopentadiene and maleic anhydride favours formation of the endo product. (ii) If the reaction in part (i) were conducted using furan instead of cyclopentadiene, what difference would you observe in the product/s, with respect to their stereochemistry? (No need to draw reaction mechanisms) (iii) Draw the stereospecific 3D structure of the product formed during the Diels-Alder reaction below. (No need to show the reaction mechanism) Нeat Br Br (Figure Q11ciii)
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