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Photochemical Cycloaddition Reactions

16. Conjugated Systems / Photochemical Cycloaddition Reactions / Problem 1

Will 2,3-dimethyl-1,3-butadiene and 2-cyclohexene-1,4-dione have a concerted reaction in the presence of UV light?

A

There will be a concerted reaction in the presence of UV light.

B

No concerted reaction will take place in the presence of UV light.

C

2,3-dimethyl-1,3-butadiene will only react with itself in the presence of UV light.

D

2,3-dimethyl-1,3-butadiene and 2-cyclohexene-1,4-dione will only react in the presence of heat.

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