Practice Problem: Conversion of trans-2-butene to cis-2-butene

Dave presents a synthesis challenge to convert trans-butene to cis-butene in three steps. He outlines a strategy involving dehalogenation, elimination reactions, and selective hydrogenation using Lindlar's catalyst. The exercise is a thought experiment to apply known reactions and strategies.

What is the main objective of the synthesis challenge discussed in the video?

• To synthesize a new compound from butene

• To demonstrate the practical application of butene in the lab

• To convert cis-butene to trans-butene in three steps

• To convert trans-butene to cis-butene in three steps

Which type of reaction is suggested to selectively hydrogenate an alkyne to a Z alkene?

• Dehalogenation

• Hydrohalogenation

• Selective hydrogenation

• Electrophilic addition

What is the purpose of using a strong base like NH2- in the conversion process?

• To stabilize the intermediate product

• To perform successive eliminations to form an alkyne

• To add hydrogen atoms to the molecule

• To catalyze the reaction

What is the role of Lindlar's catalyst in the synthesis process?

• To convert a dibromo product to an alkyne

• To convert an alkyne to a Z alkene

• To perform a dehalogenation reaction

• To convert an alkyne to a trans alkene

Which of the following steps is NOT part of the conversion process from trans-butene to cis-butene?

• Hydrohalogenation to form a halogenated alkene

• Successive eliminations to form an alkyne

• Dehalogenation to form a dibromo product

• Selective hydrogenation using Lindlar's catalyst