11-19-02 09:59
No 381245
sodium added to ethanol creates sodium ethoxide.
can this be done with any other alcohols?
Methanol?
(Hive Bee)
11-19-02 10:04
No 381246
...
"Turn on, Tune in and Drop Out"
(Hive Bee)
11-19-02 10:40
No 381266
Thanks
is it possible to make 'sodium methoxide' and use this turn say, 2,5 di bromo benzaldehyde to 2,5 dimethoxy benzaldehyde (+ 2NaBr)
Also can this be done with other group 1 metals such as Li?
(Hive Bee)
11-19-02 10:58
No 381271
...
"Turn on, Tune in and Drop Out"
(Stranger)
11-19-02 11:07
No 381276
are used for transethylation of ester groups. Free hydroxy groups will not be methylated. Maybe you could use a quartenary ammonium salt for that?
It is good to have an end to journey toward;
but it is the journey that matters, in the end.
(Hive Addict)
11-19-02 14:56
No 381343
And there is sodium isopropoxide aswell
A friend with speed is a friend indeed
(Chief Bee)
11-19-02 16:08
No 381369
You could protect the aldehyde function of 2,5-dibromobenzaldehyde as the acetal, then react it with an excess of sodium methoxide in methanol using a catalytic amount of Copper(I)bromide, followed by hydrolysis of the acetal to get 2,5-dimethoxybenzaldehyde.
Both instructions for acetal formation and methoxylation can be found at my page, but exemplified for 3,4,5-trimethoxybenzaldehyde and 5-bromovanillin respectively.