1. Intramolecular SN2 reactions can occur if the product is a stable (5-, 6-, or 7-membered) ring. Draw a reasonable mechanism for this reaction. HO NaH THF
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- b).. .. Under each potential product of this E2 elimination, write "major product," "minor product," or "not formed." Me Br H Me Me OH Me Ph Ph H Me H Et Me Me Me Ph Ph Me Me Et5. Draw the mechanism of the following SN1 reaction and the products with Stereochemistry. Draw the intermediate. Br ||||| H :O: HWhich SN2 reaction will occur most rapidly? (Assume the concentrations and temperatures are all the same.) CH A CH,0 + + CI- B CH,0 CH3 CH,0+ +F CHO CH, Br Br
- In EAS bromination reactions, a -NHCOCH3 substituent on the aromatic ring is: O an activator and an o,p-director. O a deactivator and a m-director. an activator and a m-director. NHCOCH3 catalyzes the 1,2 addition of bromine across the double bond O a deactivator and an o,p-director.Draw the product of an SN2 reaction shown below. Use wedge and dash bonds to indicate stereochemistry where appropriate. Ignore inorganic byproducts. Br Bu4NCI DMF Draw SN2 product5. Using curved arrows please give the mechanism of this reaction, including any regioselectivity or stereoselectivity. P. HBr } DCM Br
- 8. Draw the mechanism for the formation of the following compounds from the given starting materials. a) 4-2-2 CO₂H NH₂ b) -dob base b) of - dod base OCH, O OCH, O K₂CO, OCH₂ OCH₂6. Draw a mechanism for the following Sn2 reaction. H2O OH ye y앤 + H3O+Q10. For each of the following reactions (a-b), predict whether the substitution is more likely to occur following an Sn1 or Sn2 mechanism; explain your reasoning. Draw the products of each nucleophilic substitution paying particular attention to the stereochemistry of carbon 1. a) Br, CH3 MeOH H3C b) Br NaOH 1 DMF* H3C *N,N-dimethylformamide
- 2. Draw a reaction mechanism to explain the following reaction. O OH i. OH (aq) LOHIdentify the best conditions to complete the SN2 reaction shown below. A) CH3I, THF B) CH3CH₂I, THE C) CH3CH₂CCNa, THF D) CH3CH₂CCNA, CH3OH E) KI, THFLOH NaOH `N' (S) H20 'N' ČI This nucleophilic substitution occurs with rearrangement. Draw curved arrows to show the movement of electrons in the following step of the reaction mechanism. Arrow-pushing Instructions OH :OH N. H.