Question

Carefully heat the solution to its boiling point on a hot plate, remove the vial from the heat source, and add hot water dropwise until the solution just remains cloudy, about 1 mL will be required. Set the vial aside to cool; the product should crystallize as shiny flakes as the solution cools. When the mixture has reached room temperature, cool the vial in an ice bath to complete crystallization. Collect the diol by suction filtration on a Hirsch funnel, wash it with a small amount of cold water, and allow it to dry in air. Weigh the dry product, calculate the percent yield, and determine the melting point. Questions 1. Reduction of just one of the carbonyl groups of benzil gives a compound called benzoin. Draw its structure and give the IUPAC names of benzil, benzoin, and hydrobenzoin. 2. Calculate the weight of sodium borohydride needed to reduce 1.00 g of benzil to hydrobenzoin Part B. Formation of Hydrobenzoin Acetonide and Determination of its Stereochemistry by 'H NMR The hydrobenzoin prepared in part A has two identical asymmetric centers. How many for any comnound possessing two identical

Answer 1

_{Benzil Rightarrow IUPAC 1,2 - diphenylethane - 1,2 - dione Benzoin Rightarrow IUPAC 2- Hydroxy - 1, 2 -Diphenylethan - 1 - one It's a chiral compound having pair of enantiomers. Hydrobenzoin Rightarrow C_14 H_14 O_2 1,2 - Dipheml - 1, 2 - ethanedial
In above image you will get the structure with their IUPAC names and few other things. Do check it out}

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