Re: TOJC:Alcohols by reduction of carbonyl compounds
partaina@plu.edu
Tue, 10 Dec 1996 14:12:22 -0800 (PST)
I think you may be misunderstanding the way the book has drawn the
mechanism. After the process that is included in the mechanism occurs,
that same BH4 which is now a BH3 moves on to attack another ketone
molecule. When it is done there, it becomes BH2. It will keep on doing
this until it is just plain B. It is kind of like(but not the same as)
the oxidation step of a hydroboration reaction of an alkene.
Neil
On Tue, 10 Dec 1996, Jolene wrote:
> Hi! I was wondering if someone could help me with part of 11.3. Right
> after the mechanism is shown for the reduction of a ketone, it says "these
> steps are repeated until all hydrogen atoms attached to boron have been
> transferred". What are they being transferred to? I just don't see
> anywhere for them to go since the alcohol is already formed. Any ideas?
>
>
>