The structure shown below is an intermediate in the synthesis of which biogenic amine? Use arrows to show how the next intermediate in this reaction is formed, and draw the structure of that intermediate. -CH,-C-coo HN N || CH HO CH,0 H,C
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- The key step in a reported laboratory synthesis of sativene, a hydrocarbon isolated from the mold Helminthosporium sativum, involves the following base treatment of a keto tosylate. What kind of reaction is occurring? How would you complete the synthesis?When (CH3CH2)3CBr is added to CH3OH at room temperature, the product is (CH3O)C(CH2CH3)3. Propose a mechanism(s) for the reactions leading to these products and used curved arrows to show the movement of electrons.Which of the following is not a monodentate ligand ? Select one: a. OH- b. H2NCH2CH2NH2 c. H2O d. CN-
- The Ka1 of ascorbic acid is 7.94 x 10-5. Would you expect ascorbic acid dissolved in blood plasma (pH 7.35–7.45) to exist primarily as ascorbic acid or as ascorbate anion? Explain.Choose the one has the highest priority, and the one has the lowest. (Please show why) -CHO -COOH -COCH3 -CONH2Cyclopentanecarboxylic acid and 4-hydroxycyclohexanone have the same formula (C6H10O2), and both contain an —OH and a C=O group. How could you distinguish between them using IR spectroscopy?
- Thioglycolic acid, HSCH2CO2H, a substance used in depilatory agents (hair removers) has pKa = 3.42. What is the percent dissociation of thioglycolic acid in a buffer solution at pH = 3.0?Melamine, used as a fire retardant and a component of the writing surface of white boards, can be prepared from s-trichlorotriazine through a series of SNAr reactions with ammonia. The first substitution takes place rapidly at room temperature. The second substitution takes place near 100 °C, and the third substitution requires even higher temperature and pressure. Provide an explanation fatr this reactivity.The conversion of 3 alcohols into alkenes under acidic conditions involves two cationic intermediates. For each reaction, draw the complete mechanism using curved arrows.