Which of the following is true about 1,4-addition of HBr taking in butadiene?

Product is thermodynamically favored

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Product is kinetically favored

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Product is formed at low temperatures

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Product is formed at high temperatures

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Solution

The correct options are
B Product is thermodynamically favored
D Product is formed at high temperatures
The product obtained by the 1,4 addition of HBr to butadiene is thermodynamically controlled as more stable alkenyl bromide is the product. Such reactions occur at high temperature. Kinetically favored reactions occur at low temperature and involve formation of less stable alkenyly bromide.

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