Question

Best method to form aromatic iodide is:
A. \[ArN_{2}^{+}+HI\to \]
B. \[RN{{H}_{2}}+{{I}_{2}}\to \]
C. \[ArN_{2}^{+}+KI\to \]
D. \[ArN_{2}^{+}+P{{I}_{3}}\to \]

Answer 1

Hint: Sandmeyer reaction mechanism leads to an electron mechanism including free radicals. The sandmeyer reaction is a great example of radical nucleophilic aromatic substitution.

Complete step by step answer:
The Sandmeyer reaction is a technique for preparing aryl halides.
This reaction involves the reaction of a diazonium salt with potassium iodide to shape separate aryl iodide. The diazonium salt is set up from aniline by reaction with nitrous acid at cold temperatures.By responding with iodine, potassium loses its one valence electron, discharging its valence shell. By responding with potassium, iodine increases a valence electron, filling its valence shell. The response of potassium with iodine is the aftereffect of every unbiased iota having an unfilled external shell of electrons, or valence shell.
A reaction bears a resemblance to the Sandmeyer reaction occurring when iodine is instituted into an aromatic compound across treatment of the arenediazonium salt with potassium iodide (\[KI\]). Introduction of iodine by treating an arenediazonium salt with KI.

Hence, the correct option is C. \[ArN_{2}^{+}+KI\to \]

Additional Information:
Iodine is a germ-free that eliminates microorganisms and microbes (Lawrence, 1998). In the past its clinical utilization was restricted by the way that basic iodine can aggravate the skin, be assimilated fundamentally and is practically insoluble in water.
A solution of iodine (\[{{I}_{2}}\]) and potassium iodide (\[KI\]) in water has a light orange-brown color. If it is added to a sample that contains starch, such as the bread pictured above, the color changes to a deep blue.

Note:
Potassium iodide is used across with other emergency computers recommended by public officials. Potassium iodide is accessible under the following dissimilar brand names: Pima Syrup, SSKI, Iosat, ThyroSafe, and ThyroShield.

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