'x' is the product which is obtained from benzene by reacting it with carbon monoxide and hydrogen chloride in the presence of cuprous chloride. 'y' is the major product obtained from the benzene by reacting it with ethanoyl chloride in the presence of anhydrous AlCl_3. Product (major) obtained by heating x and y in the presence of alkali is z. Total number of (pi) electrons in z is ________.
A. A
Benzene reacts with CO and HCl in the presence of CuCl to give benzaldehyde (x) via the Gattermann-Koch reaction. Benzene reacts with ethanoyl chloride (CH_3COCl) in the presence of anhydrous AlCl_3 to give acetophenone (y) via Friedel-Crafts acylation. Heating benzaldehyde (x) and acetophenone (y) in the presence of alkali results in a crossed aldol condensation to form benzalacetophenone (z). C_6H_5CHO + CH_3COC_6H_5 OH^-, C_6H_5-CH=CH-CO-C_6H_5 + H_2O The structure of z (C_6H_5-CH=CH-CO-C_6H_5) contains two phenyl rings (6 bonds), one C=C double bond (1 bond), and one C=O double bond (1 bond). Total number of bonds = 6 + 1 + 1 = 8 Total number of electrons = 8 2 = 16 Answer: 16
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