Answer :

BH3/THF with H2O2/NaOH is the leaving group when acetic anhydride is reacted with ethanol in a nucleophilic acyl substitution reaction

Corn and other plant resources are used to make ethanol, a sustainable fuel. In the United States, ethanol is widely used and is present in more than 98% of gasoline. E10 (10% ethanol, 90% gasoline) is the most widely used ethanol mix. The production of medicines, polymers, lacquers, polishes, plasticizers, and cosmetics all need ethanol. In medicine, ethanol is employed as a topical anti-infective and as an antidote for methanol or ethylene glycol overdose. More than two billion people consume ethanol (also known as ethyl alcohol) daily.

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