Eclipsed ggered Eclipsed vicinal Syn-periplanar 4. Which of the following are go

Question

Eclipsed ggered Eclipsed vicinal Syn-periplanar 4. Which of the following are good leaving groups? (Circle all that apply) H- CH CH3OH CH3 SH NH 5. Which of the wing are strong (Circle all that apply) bases KOH) NH NaCN HO H2S Nal KOtBu 6. Which of the following reaction conditions will increase the ratio of elimination to substitution products in a reaction of an alkyl (Circle all that apply) Primary halogenoalkane Tertiary halogenoalkane Aqueous solution High heat Low heat 7. Draw the (most likely) major elimination product for the reaction of 2-bromo-2-methylbutane with KOH KOtBu 8. According to Zaitsev's Rule, when more than one alkene product is possible from an elimination of an alkyl halide, the Most Least substituted alk will be the major product. (Circle ene 85

Explanation / Answer

Questino 4.

good leaving groups must be pretty electronegative and shold not form weak interactions

Halides but F-+; that is, I-, Br-, Cl-,

F- will not due to the weak acid formation.

Question 5

Strong bases --> will donate OH- to solution readily OR will accept H+ readily, so H2O form OH-

from the list

Only KOH and NaNH2 are strong bases, since NaNH2 --> Na+ + NH2- so NH2- accept H+ from water strongly

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