9. Alkenes and Alkynes

Double Elimination

9. Alkenes and Alkynes

Double Elimination

Guided videos.

Learn with Johnny

Go to the course

Guided course

General features of double dehydrohalogenation.

02:20

General features of double dehydrohalogenation.

The double dehydrohalogenation mechanism.

Supply the mechanism and product for the following reaction.

Practice this topic

Textbook Question

When 2,2-dibromo-1-phenylpropane is heated overnight in fused KOH at 200 °C, the major product is a foul-smelling compound of formula C9H8. Propose a structure for this product, and give a mechanism to account for its formation. Problem-Solving Hint:

490

views

Textbook Question

When 2,2-dibromo-1-phenylpropane is heated overnight with sodium amide at 150 °C, the major product (after addition of water) is a different foul-smelling compound of formula C9H8. Propose a structure for this product, and give a mechanism to account for its formation.

346

views

Textbook Question

(••••) LOOKING AHEAD An alternate method for the synthesis of alkynes relies on the double elimination of H―Br from a dihaloalkane under basic conditions. Suggest a mechanism for this reaction that we discuss in Chapter 12.

388

views

Textbook Question

Show how you would accomplish the following synthetic transformations. Show all intermediates. (a) < of reaction>

438

views

Textbook Question

Show how you would accomplish the following synthetic transformations. Show all intermediates. (b) < of reaction>

460

views

Showing 5 of 5 practice