If diazomethane () is photolyzed in the presence of trans-2-butene, the resulting cyclopropane derivative will be:

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Question

If diazomethane ($CH_2N_2$) is photolyzed in the presence of trans-2-butene, the resulting cyclopropane derivative will be:

Prashant Kotian · Accepted Answer

Correct answer: B. Photolysis primarily generates singlet carbene initially, which adds to the alkene in a single concerted step, stereospecifically preserving the trans geometry of the alkene.

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