Question

7. The IUPAC name for the he IUPAC name for the following compound is: hint: the OH controls the name a) 3-chloro-2-methylcyclohexanol b) 1-chloro-4-methylcyclohexanol c) 2-methyl-3-chlorocyclohexanol d) 2-methyl-5-chlorocyclohexanol e) 5-chloro-2-methylcyclohexanol 8. Which of the following cannot be an electrophile? b) BF, c) *NO d) Fel a) H e ) CH2=CH, BF 9. Based on the following energy diagram, which compound is formed faster? Reacton a) A from B b ) B from A c) Cfrom 8 d) CB from C 10. Which of the following has the lowest priority? -c- H =CH=CHCH, | =CHNCH, C=C-CH 11. Which of the following are methods used for the resolution (separation of enantiomers a) Manual separation b) Column chromatography using an achiral compound Conversion to constitutional isomers followed by regeneration under acidic conditions d) All three e) Only (a) and (b) 12. The specific rotation of a pure sample of (s)-phenylalanine is +70°. A mixture of enantiomers gives a specific rotation of 7.0°. What are the percentages of the (R) and (S) enantiomers? a) 90% S and 10% R b) 95% 5 and 5% c) 52.5% Sand 47.5%R d) 55% Sand 45%R

Answer 1

M3 14 04 IUPAC 61-chloro-4 methylaxlohexanol electrophile Ht B fet² No2 electocophile electrophile electriophile electrophile ă loving species .CM 2 as nucleophile. ne cloud act E27€, CLS rate of aan become fastest when activation energy of the sin become minimum. B A slows mininum Ea nene fastest Rexoduct formation Ans: 6

10 —сч = см Сиз – си = Jщ, — и о-с). — сч — си см; 19. (C), -си- г-см3 (-), (4), - (5) 6 C = C — СМ3 Pirosul order Tquoououen. to exabl -cn=cucu Ani Lowest poiseuity group:

2 lee obs. a -xoo x of pure enactioner = I xloo 10 700 10, Now, Nowo y ee- le R/100 de RTS I if R = 454 t.ee =10 then S: 45%. Am. € 5515 s 454.8