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In which of the following reactions is a new carbon-carbon bond not formed?

In which of the following reactions is a new carbon-carbon bond not formed?

مندرجہ ذیل میں سے کون سا رد عمل میں نیا کاربن کاربن بانڈ تشکیل نہیں دیا گیا ہے؟
Explanation
  • The Cannizzaro reaction involves the disproportionation of aldehydes, producing alcohol and carboxylic acid without forming a new C-C bond.
  • In contrast, Wurtz, Aldol condensation, and Friedel-Crafts reactions create new carbon-carbon bonds.