00:02
This question asks which of these ethers cannot be made by a williamson ether synthesis.
00:08
So just as a reminder, a williams and ether synthesis is a primary or secondary alkaliad plus an alkaliad forming an ether.
00:20
And so we need to have, and this happens via an s &2 reaction.
00:24
So we need to have an appropriate alkyo halide for that s &2 reaction to happen.
00:29
And so that means that we have to be able to make a primary or secondary.
00:33
Alkaliolide on one side of the oxygen.
00:35
So starting with this one right here, we can make a primary alkyl halide right here.
00:41
So this will be our halide over here, and then we can use this side as the al -coxide, and that will work.
00:52
For this one over here, again, we can actually make either side of these a primary alkylo halide, but we'll probably most likely make this side the alkali halide since it is less hysterically hindered...