The first step of the reaction, we have reaction between a nucleophile and an electrophile.
What is the missing reagent?
We can see that in the first step of the reaction, we have reaction between a nucleophile and an electrophile. In this case, the electrophile would have to be an alkyl halide which produces a carbocation as show in the image attached.
What we have here is quite similar or like most of the organic reactions, this reaction occurs in a number of detailed or smaller steps and each step of the reaction is going to help to bring us closer to the end product of the entire steps of the reaction which is wat we target as we carry out the particular reaction.
The second step involves the reduction of the alkyne with the use of a Lindlar catalyst. As such the reaction is poisoned and it stops at the alkyne stage rather than going on to obtain the alkane.
Learn ore about electrophiles:https://brainly.com/question/21773561
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