00:01
Problem 9 .30 asks us to give the steps that will change an alpine into an alkan with a cyclopropane.
00:12
Let's look at our final product and work backwards.
00:16
We see that we have a 7 carbon chain and the propines, the propane starts, the cyclic part of the compound begins on carbon 2 and goes to carbon 3.
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You may remember from working with alkenes that the cyclopropane molecule begins with a double bond.
00:39
So we will have to at some point convert our triple bond back to a double bond.
00:45
But notice that there's an extra carbon at the end of where our double bond would be.
00:51
We need to begin this reaction process by adding another carbon.
00:55
So we do this by first removing a terminal hydrogen using nanh2.
01:10
And this is in liquid pneumonia.
01:19
And then we'll add a methyl using iotomethyne, and this will be mei...