8. Name these groups (left to right) (A) sec-propyl, sec-butyl, isobutyl (B) isopropyl, isobutyl, se
9. What compound is formed when 2,2-dimethyloxirane is treated with ethanol containing a trace of HC
10. Which of the following compounds gives a 1H-NMR spectrum consisting of only two singlets?(A) CH3
11. How many peaks appear in the proton spin decoupled 13C-NMR spectrum of the compound below? (A) 1
13. The correct order of increasing IR stretching frequencies for the following bonds. (A) IV, I, V,
15. The following reaction presents the first step in the biological degradation of lysine. Please i
16. The exact mechanism of the following reaction is difficult to establish conclusively. However, b
18. Assign E/Z nomenclature to the following alkene. (A) (1Z, 3Z, 5Z, 7Z) (B) (1E, 3E, 5Z, 7Z) (C) (
19. Which of the following is least likely to undergo a smooth crossed Claisen condensation with met
21. Which is the only one of these compounds which cannot self-condense in the presence of dilute aq
22. Which of the following compounds would be the major product from aldol condensation of 6-oxohept
23. Which of the following Wittig reagents would be useful for converting R2C=O into R2CHCHO after h
24. Reaction of ethylmagnesium bromide with which of the following compounds yields a tertiary alcoh
25. What starting materials would be suitable for preparing this compound by a combination of Michae
26. The ozonolysis of limonene give compound A plus formaldehyde. Choose the correct structure for A
28. Rank the following compounds in order of increasing reactivity towards chlorination with Cl2/AlC
29. What compound is produced when (R)-pentan-2-ol is treated with TsCl followed by NaI?(A) sodium (
30. What type of intermediate is present in the SN2 reaction of cyanide with bromoethane?(A) carboca