8. Elimination Reactions

Predict the mechanism for the following reactions. Provide the full mechanism and draw the final product.

Predict the mechanism for the following reactions. Provide the full mechanism and draw the final product.

Show a mechanism for the following elimination reactions. Label the mechanism as E1 or E2.

(c)

Protonation converts the hydroxy group of an alcohol to a good leaving group. Suggest a mechanism for each reaction.

(b)

Predict the product(s) that would result when molecules (a)–(p) are allowed to react under the following conditions: (ii) PBr₃ If no reaction occurs, write 'no reaction.'

(c)

Predict the product(s) that would result when molecules (a)–(p) are allowed to react under the following conditions: (v) 1. TsCl, Et₃N 2. NaOt-Bu (vi) H₂SO₄ If no reaction occurs, write 'no reaction.'

(o)

Paying close attention to the stereochemical outcome, predict the product of these elimination reactions.

(c)

Predict the mechanism for the following reactions. Provide the full mechanism and draw the final product.

Predict the product(s) that would result when molecules (a)–(p) are allowed to react under the following conditions: (v) 1. TsCl, Et₃N 2. NaOt-Bu (vi) H₂SO₄ If no reaction occurs, write 'no reaction.'

(k)

Suggest a bromoalkane and the conditions necessary to produce the alkenes shown.

(a)

Predict the product(s) that would result when molecules (a)–(p) are allowed to react under the following conditions: (i) SOCl₂ ; (iii) SOCl₂, NEt₃. If no reaction occurs, write 'no reaction.'

(c)

Predict the mechanism for the following reactions. Provide the full mechanism and draw the final product.

Why is the S_N1 reaction shown an inefficient way of synthesizing ethers?