Question

(b) Thermal (2+2) 1
forbidden. Explain.
cycloaddition
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Answer 1

Answer:

please mark as BRAINLIST ANSWER

Answer 2

Answer:

A cycloaddition is a chemical reaction, in which "two or more unsaturated molecules (or parts of the same molecule) combine with the formation of a cyclic adduct in which there is a net reduction of the bond multiplicity." The resulting reaction is a cyclization reaction.