Nice
.
Well, I don't have experience with vanadium compounds ... and probably those dudes from the Health and Safety Executive in the UK are just pussies. They published some recommended limits (RL) which represent good practice and realistic levels for the degree of exposure. They say the recommended limit for vanadium pentoxide is 0.5 mg / m
3 (for comparison: the RL for diazomethane is 0.4 mg / m
3).
But since V
2O
5 is a crystalline compound, there is no real danger to get some dust of that compound in your lungs. I 'd be more cautious with diazomethane.
In each case, a catalytic amount of V
2O
5 is FAR better than 42 grams of chromium trioxide.
Ritter, great to hear that you 've good results with the vanadium catalysed reaction. I 'm
to see that a experienced bee values this procedure so much. Voilà, the JACS procedure Chimimanie found is nice supplement for that quinones.html file of yours, Rhodium.
Chimimanie, now I have an opportunity to welcome you at The Hive. I like your posts very much. Keep up the good work
.