Talk:2,3-Wittig rearrangement

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I just wanted to bring to your attention that there are a few mistakes in the schemes and the introduction on the [2,3]-Wittig rearrangement page. Reactions (1), (2) and (3) contain erroneous structures. In the case of (1) the introduction describes a potential substrate where ' X is a carbanion and Y an alkoxide', such compound would not be able to rearrange via a [2,3] pathway (would not be an allylic ether). In the case of (2) the both the [1,2] and [2,3] product are incorrect (count your carbon atoms). There are extra methylene groups in both products. In the case of (3) the substrate is not an adequate substrate for a [2,3]-rearrangement (extra methylene). In addition, the product shown is also erroneous. Hopefully this is helpful.

Thanks for the tip—now fixed. --Michael Evans 14:04, 23 November 2010 (CST)