Sherlock Holmium - 15-6-2018 at 23:08
Just a quick question: Does alpha halogenation of a ketone occur on the least or most substituted carbon?
HeYBrO - 16-6-2018 at 01:21
just a quick note: spoon feeding is not permited here
solo - 16-6-2018 at 12:05
.....maybe you can read about it.....solo
https://chemistry.stackexchange.com/questions/23500/regiosel...
Assured Fish - 16-6-2018 at 13:51
Lets turn this thread into something more useful.
I have a question pretaining to enols.
I ask because i have never found an example of this being done before despite my research.
Would it be possible to reflux a ketone in an excess of say HBr to form a halo alkene.
The following is the reaction i wish to accomplish.

I suppose this would really be a question of, would the HBr attack the alkene or would it rather attack the hydronium leaving group.
Then i guess the other issue is under the harsh condition of refluxing there may be other side reactions involving HBr adding across the double bond
of 1,2 dibromopropene.
Perhaps a similar reaction could be accomplished using a much stronger halogenating agent such as thionyl halide or phosphorous trihalide which would
perhaps mitigate the harsh conditions required for a hydrogen halide to accomplish the same task.
Any input would be appreciated?
HeYBrO - 16-6-2018 at 22:40
I think you should draw out the full mechanism of what you are proposing
Assured Fish - 16-6-2018 at 22:48
New thread to go with it too i reckon.
[Edited on 17-6-2018 by Assured Fish]