- Which of the following compounds has the lowest pKa? COOEt H2 OH COOET CN COOEt...
4. Which of the following compounds has the lowest pk ? o com comportamento 5. Which of the following compounds would produce a racemate when treated with base? 6. What is the major product of the transformation below? 1.CH, MgBr 1. LDA. -78'C 2. PhSeBr 3. LO 2. H2O 7. What would be the major product of the following reaction? 8. What would be the major product of the following reaction sequence? 1. LDA, -78°C 2. PhCH BY
Arrange the following compounds in the order of increasing pKa value (lowest pKafirst). A. 4, 1, 2, 3 B. 3, 2, 4, 1 C. 4, 2, 1, 3 D. 2, 1, 3, 4 E. 3, 1, 2, 4 A B C D E CN C) OH N OH OH CAI C) C) 4
organic chemistry. which of the following compounds has the lowest pka? 4. Which of the following compounds has the lowest pK? . .་ ་ ་ ་ ་ ་
Which proton would be abstracted first when this compound is treated with NaNH2? OH B H D H3C A с А B C D Which method will accomplish this transformation? å-a O A. 1. BH3.THE 2. H202, OH 3. EtBr B. 1. EtMgBr 2. H20/H30+ OC. 1. EtzCuli 2. H2O/H30+ OD. 1. HBr 2. EtLi
Question 3 Which of the following is a keto-enol tautomeric pair? OH OH OH and and o and COM OH I II III он OH a and a and IV CA. 1 B. V C.II D. IV E. III Question 4 What would be the major product of the following reaction sequence? он PCC 1. LDA(-78C) 2. CHCHOI ? CH C1 HO వరలో I II MI o IV A. II B. I C. V D. III E. IV
Explain please! (b Which of the following molecules has the lowest boiling point? CN OH
Which of the following compounds would have the lowest Rfvalue on a TLC plate? HO OH A. B. C. D. E.
Please answer all. Just need A,B,C or D 2. (01') Which proton has the lowest pKa value (This is Elvitegravir an HIV drug)? На CI O2Hd A) Ha B) Hb C) Hc D) Hd 3. (Q1) Which is the major product in this reaction? 1) Sia28H-THF 2) H202, NaOH C) D) но он 4. (a1') What is the hybridization of the nitrogen atom in the following structure? NH A) sp B) sp C) sp D) sp
30. In the following equation which one of the compounds is acting as an acid H2(SO4) + H2O --> HSO4- + H3O+ a. H2O (Incorrect) b. H2SO4 c. H3O+ d. HSO4- e. none of the above
17. Which of the following compounds is the strongest acid? A. 1 OH B. II C. III D. IV E. V CN NO2 NO2 1 - II III CN CN 요 CO2Et IV V