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11 Nov 2019
Exhibit 19-2 Consider the data below to answer the following question(s). Cyanohydrins are important intermediates in the synthesis of a-hydroxycarboxylic acids from ketones and aldehydes. The nitrile functional group can be hydrolyzed by aqueous acid to yield a carboxylic acid. Nitriles can also be hydrolyzed to carboxylic acids using aqueous base. Unfortunately, when a cyanohydrin is treated with aqueous base the original carbonyl compound is isolated. OH CH-COOH HO CN N OH H20 +NaCNHO 18. Refer to Exhibit 19-2. The reaction of an aldehyde with hydrogen cyanide is an example of reaction. a. a nucleophilic substitution b. an electrophilic addition c. an electrophilic substitution d. a nucleophilic addition 19. Refer to Exhibit 19-2. Identify the electrophile in the reaction of benzaldehyde with hydrogen cyanide
Exhibit 19-2 Consider the data below to answer the following question(s). Cyanohydrins are important intermediates in the synthesis of a-hydroxycarboxylic acids from ketones and aldehydes. The nitrile functional group can be hydrolyzed by aqueous acid to yield a carboxylic acid. Nitriles can also be hydrolyzed to carboxylic acids using aqueous base. Unfortunately, when a cyanohydrin is treated with aqueous base the original carbonyl compound is isolated. OH CH-COOH HO CN N OH H20 +NaCNHO 18. Refer to Exhibit 19-2. The reaction of an aldehyde with hydrogen cyanide is an example of reaction. a. a nucleophilic substitution b. an electrophilic addition c. an electrophilic substitution d. a nucleophilic addition 19. Refer to Exhibit 19-2. Identify the electrophile in the reaction of benzaldehyde with hydrogen cyanide
Beverley SmithLv2
9 Apr 2019