Question

1. Which of the following are ethers? Circle All that Apply. Saisir Šv mnom 2. Which of the following is/are secondary (29) alcohols? Circle All that Apply. OH ОН 3. Which of the following are epoxides? Circle All that Apply. 17 4. Which of the following are thiols? Circle All that Apply. SH H₃ C CH₃ 3

$-=CH$

Answer 1

1. All are ethers 2. 2 & 4 are ethers since OH attached carbon linked to two other carbons 3. 3 & 4 are epoxides since they are three membered cylic ethers 4. 1 is thiol since it is only having an SH group

5.

a) 3- bromo-3-methylhexene b) (1s, 4s)-1,4-dimethoxycyclohexene c) (R)-4-methylpentan-2-ol d) (2)-2-methylhex-4-en-2-ol e) (2)-2-chloro-3,4-dimethylpent-2-ene f) ethyl(isopropyl)sulfide g) 4-methylpent-4-en-1-ol h) cyclohex-2-en-1-ol i) 4-ethyl-2,2-dimethylheptane j) 3-methylpent-4-en-2-ol k) 1,4,7,10,13,16-hexaoxacyclooctadecane 1) 2-methylpent-1-ene m) (15,4s)-4-ethylcyclohexan-1-ol n) (R)-3-methylpent-1-en-4-yne o) 3-isopropyl-2,4-dimethylpentane p) cyclopent-2-en-1-ol q) 2,4-dimethylhexane r) (R)-3-chloro-1-methylcyclohex-1-ene s) 3,4-dimethylhex-1-en-5-yne t) Ethynylcyclohexane u) 2,3,4-trimethylhex-2-ene

6. Only the second one is trans, since it is axial equatorial at positions at 1 and 3 7. Only the second one is trans, since it is diequatorial at positions at 1 and 2 8. Only the last one is trans (1,2 diequatorial) whereas the first three are 'cis' 9. Only the third one is trans (whereas 1,2,4 are 'cis' 10. The second one is a steroid nucleus-skeleton