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- a) b) C) HBr CH3CH₂OOCH₂CH3 1. Hg(OAc)2, H₂O 2. NaBH4 1) BH₂ / THF 2) H₂O2 NaOH (aq) coldPregabalin, C3H17NO2 is used as a treatment of epilepsy and neuropathic pain. NH2 pK, = 4.2 %3D H. pK = HO, = 3.4 Select the equilibrium corresponding the to the pK, = 9.8 CgH18NO2 (aq) + H20 (I) C3H17NO2 (aq) + OH (aq) C3H16NO2 (aq) + H20 (1) CgH17NO2 (aq) + OH (aq) CgH17NO2 (aq) + H20 (1) C3H18NO2 *(aq) + OH (aq) C3H17NO2 (aq) + H20 (1) CgH16NO2 (aq)+ H30*(aq)Complete the reaction map by matching A-E with the given choices. H2 H2 B E Pt Cla Na in lig NH3 он + но Match each item to a choice A
- 51. Which is NOT a valid resonance structure for the conjugate base of this molecule? (A) (C) OEt (C) :0: : OEt (+) HBr ROOR ü (B) OCH 3 (D) 52. What is the major product of this reaction sequence? o Mg ether (A) (B) :0: (D) H OEt OEt H OEt X CH31 LOH LOCH₁Which of the following is the strongest acid? BRCH2CO2H ICH2CO2H O CICH2CO2H O FCH2CO2HProvide the required information for the reaction scheme below: OH Compound B Compound C OH Compound A CHO CH2OH CHO CH2OH Compound E Compound D
- What is the order of increasing acidity for the following compounds? (least acidic to most acidic) CH3CH₂CO₂H BrCH₂CH₂CO₂H CH3CH₂CH₂OH I II III O IV, II, I, III O I, II, IV, III III, IV, II, I III, I, II, IV CH3CHBrCO₂H IVb) Name the following molecule, excluding stereochemistry ОН .Cl 4-chloro-1- Rbhei-2- c) Provide the IUPAC name for the molecule shown here with correct stereochemistry: CH3 SH d) Rank the following in order of increasing basicity in the gas phase (least basic to most basic): N. NH2 NH2 NH2 D F CThioglycolic 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?
- Summarize the relationship between pKa and acid strength by completing the following sentences: a. The higher the pKa of an acid, the stronger or weaker the acid. b. The lower the pKa of an acid, the stronger or weaker the acid.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?Protonated intermediates are common in more complex organic reactions. Which molecule when protonated is more acidic? (+) +) acetone diethyl ether acetone O diethyl ether
