Overall reaction is an example for hydration of Alkene by Electrophilic Addition mechanism and involves ring expansion.
1. Propose a mechanism for the formation of the given product: (6 po HT H2O
5. Propose a mechanism to justify the formation of the following product. (4) Br 1. NaNH2, Liq NH3
4. Propose a mechanism to explain the formation of the unexpected product: 1. xs. CH3CH2MgBr _THE OCH, 2. H30* expected product unexpected product 8 pts.
1. Propose a mechanism to account for the formation of this product. OH H2SO4, Heat 2. Which solvents are preferred for an SN2 reaction. Why is this? Which solvents are preferred for an Snl reaction. Why is this?
propose a mechanism for the formation of this
compound.
the the major ketal product is ethyl acetoacetate
ethylene ketal.
4. (in H22 Os veyi acciacciate. 4. The ketal product contains a minor amount (< 0.1%) of a substance, C4H20s whose molecular structure contains ester and ketal groups. Propose a structure for the compound and a mechanism for its formation.
8. Propose a reasonable mechanism to account for the formation of the following product: OCH2CH3 CH3CH OH Heat
Draw a stepwise mechanism for the formation of the only possible
aldol condensation product, using H2O as a proton source and OH- as
the base
Draw the ste puise mechanism for the Formation of the only possible aldo condensation produc+. ー2
Propose a mechanism for acid-catalyzed acetal formation
between propiophenone and ethylene glycol.
5. Propose a mechanism for acid-catalyzed acetal formation between propiophenone and ethylene glycol. (5 pts)
Problem 1 (10 pts) Draw the major product (monoalkylation) and propose a mechanism for its formation. OCH3 (CH3)3CCI AICI: Problem 2 (10pts) Draw the major product of the following reactions. Brz FeBr3 a) HNO3 H2SO4 b) OH ON NOZ NaOH 50°C c) Br Problem 3 (10 pts) Show the necessary steps for each of the following transformations. CO2H ŞO3H NO2 Br a) b)
4. Propose a mechanism for the formation of the following products OH +OH Br 5. Draw the structure of product formed in the following reaction Cl C4HgS Na DMSO Cl Draw the mechanism leading to product formation.
1. (5 pts) Propose a mechanism for the following reaction: H2O