In Sandmeyer reaction, what is the intermediate compound formed before adding cuprous halide?(a) Alcohol halide(b) Diazonium halide(c) Aqueous halide(d) None of the mentionedI have been asked this question during an interview.My doubt stems from Sandmeyer Reaction topic in section Halogenation of Unit Processes

In Sandmeyer reaction, what is the intermediate compound formed before

1.	In Sandmeyer reaction, what is the intermediate compound formed before adding cuprous halide?(a) Alcohol halide(b) Diazonium halide(c) Aqueous halide(d) None of the mentionedI have been asked this question during an interview.My doubt stems from Sandmeyer Reaction topic in section Halogenation of Unit Processes
Answer» RIGHT answer is (b) Diazonium halide To explain I would say: During the reaction, FIRSTLY we prepare the SOLUTION of diazonium halide and gradually add it to a solution of the corresponding CUPROUS halide. Afterwards the diazotization and replacement of the diazo group TAKES place in one operation.

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