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Why was it important to keep the dioxolane derivative (an acetal) cold and dry after it was formed?
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- Why must the alkyl halide product be dried carefully with anhydrous sodium sulfate before the distillation?Why is benzene diazonium chloride not stored and is used immediately after its preparation?Why is it possible to use solvent-grade diethyl ether in the work-up procedure, whereas the more expensive anhydrous form must be used to prepare the Grignard reagent?
- why is potassium hydroxide added to the reaction mixture for Williamson Ether Synthesis?What is the ratio of benzaldehyde to thiamine hydrochloride used in this reaction? Why are we not using a full equivalent of this reagent?Would it be favorable to get a 1,4-adduct of anthracene and maleic anhydride? Why or why not? If the 1,4-adduct of anthracene and maleic anhydride had formed, would it have different exo and endo isomers?
- a. What is the purpose of adding Sodium carbonate to the black tea? You can explain its purpose as a paragraph or by showing the reaction of one phenolic compound reacting with it.b. Do you expect this phenolic compound to be soluble in water or DCM?How does washing with 10% sodium bicarbonate help to isolate ethyl cinnamate in each synthesis reaction? As part of your answer show the reaction of aqueous sodium bicarbonate with cinnamic acid and with cinnamoyl chloride (remembering that cinnamoyl chloride hydrolyzes to cinnamic acid in water).why it is important to keep water out of the acid-catalysed esterification of octanoic acid with 1-propanol reaction? What would happen if water got into the reaction mixture?
- Why is it easier to remove excess acetic acid from the products than excess isopentyl alcohol?Why are the starting materials (Triphenyl Phosphine and Benzyl Chloride) soluble in xylene but the product (phosphonium salt) is not soluble in xylene?Why is the ether layer containing naphthalene washed with saturated sodium chloride after completely extracting the acid and base components of a mixture? Group of answer choices To remove trapped water. To remove possible 3-nitroaniline impurity. To remove possible benzoic acid impurity. To remove excess diethyl ether.