Hi,
I just received an assignment that I've been working on and I've hit something of a roadblock.
I'm asked to draw a mechanism for the following reaction:
![](https://www.chemicalforums.com/proxy.php?request=http%3A%2F%2Fimg820.imageshack.us%2Fimg820%2F4500%2Fchemhelpproblem.png&hash=8828029ec623965ff1a8d3c26c106aa298ac65ea)
This is my attempt thus far:
![](https://www.chemicalforums.com/proxy.php?request=http%3A%2F%2Fimg508.imageshack.us%2Fimg508%2F6113%2Fchemhelpattempt.png&hash=9ecec19b4269332303e85f455c0acde945338275)
Since I can't see any way to get rid of that carbocation I think that I'm probably way off, so if anybody could point me in the right direction I'd really appreciate it.
Thanks.
Edit: I've also come up with this:
![](https://www.chemicalforums.com/proxy.php?request=http%3A%2F%2Fimg35.imageshack.us%2Fimg35%2F1995%2Fchemhelpattempt2.png&hash=44de38666a8b94bfaa0672de521ceae56a9d7f61)
But I feel like this is not quite right, either.