What product would be obtained in the alkyne reduction shown below?

Determine the product(s) formed in a reaction between H ₂, Pd-CaCO₃, Pd(OAc)₂, quinoline (Lindlar's catalyst), and the alkyne given below.

Determine the reagent that can be used to perform the reaction given below.

The hydrogenation reaction of an alkyne using the Lindlar catalyst always gives acis-alkene. Explain why.

Determine the stereoisomers produced by the reactions indicated below.

Consider the reaction that was reported to be performed electrochemically:

(i) Traditionally, what reagent was used to carry out this reaction?

(ii) Is the reaction that was reported to be performed electrochemically more or less hazardous to the environment?

For each reagent below, draw the major product if it is allowed to react with 1 mol of hex-3-yne.

(i) excess H₂, Pd/C

(ii) H₂/Lindlar catalyst.