Which of the following forms a crystalline addition product with saturated aqueous $NaHSO X_{3}$ ?

A $C X_{6} H X_{5} - CO - C X_{6} H X_{5}$
B $C X_{2} H X_{5} - O - C X_{2} H X_{5}$
C $CH X_{3} - CO - CH X_{3}$
D $CH X_{3} - CO - OC X_{2} H X_{5}$

Answer: C

Bisulphite adducts form from aldehydes, methyl ketones and unhindered cyclic ketones. Acetone is a methyl ketone and reacts. Benzophenone is too hindered and conjugated, and ethers and esters have no reactive C=O of this kind.

Practice Organic Reaction Mechanisms I: Nucleophiles and Carbonyl Addition More on Addition of cyanide, bisulphite, Grignard reagents

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Which of the following forms a crystalline addition product with saturated aqueous NaHSOX3​?

Answer: C

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Which of the following forms a crystalline addition product with saturated aqueous $NaHSO X_{3}$ ?