For anyone who reads the chemical literature regularly, this is a not very interesting reaction, but they've managed to get some press by using a catchy title to lure those not well-versed in oxidation chemistry. The noble metal-catalyzed oxidation of alcohols by oxygen is a well-known reaction. Most noble metal salts or noble metals embedded on carbon or silica will mediate the same reaction. In fact, the reaction described is often an undesired side reaction in other metal-catalyzed processes. It's amazing what a clever title in a paper can do.
The Beresford TC-7510 DAC is apparently very good. http://www.homehifi.co.uk/products/TC-7510.html I use a Firestone Audio Fubar II DAC (http://www.firestone-audio.com) for USB since the G4 iBook has no other digital outputs.
"Metathesis can be compared to a dance in which the couples change partners."
I found this particular description of metathesis to be the most accurate statement. If look at the overall transformation and consider each dancer to be an olefinic carbon, that's exactly what metathesis does. It's probably one of the easiest chemical transformations to explain to non-chemists.
I'm pretty sure you can't make cyclopropenes with metathesis. The thermodynamics of that particular reaction are against you. The 1,4 diene starting material is often unreactive for transition metal catalyzed processes due to catalyst inhibition. Cyclopropenes, at least these days, are best prepared using rhodium(II) catalyzed cyclopropenation of alkynes.
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I think patents needs to be filed before publication in any journal, open access or not.
For anyone who reads the chemical literature regularly, this is a not very interesting reaction, but they've managed to get some press by using a catchy title to lure those not well-versed in oxidation chemistry. The noble metal-catalyzed oxidation of alcohols by oxygen is a well-known reaction. Most noble metal salts or noble metals embedded on carbon or silica will mediate the same reaction. In fact, the reaction described is often an undesired side reaction in other metal-catalyzed processes. It's amazing what a clever title in a paper can do.
The Beresford TC-7510 DAC is apparently very good. http://www.homehifi.co.uk/products/TC-7510.html
I use a Firestone Audio Fubar II DAC (http://www.firestone-audio.com) for USB since the G4 iBook has no other digital outputs.
"Metathesis can be compared to a dance in which the couples change partners."
I found this particular description of metathesis to be the most accurate statement. If look at the overall transformation and consider each dancer to be an olefinic carbon, that's exactly what metathesis does. It's probably one of the easiest chemical transformations to explain to non-chemists.
I'm pretty sure you can't make cyclopropenes with metathesis. The thermodynamics of that particular reaction are against you. The 1,4 diene starting material is often unreactive for transition metal catalyzed processes due to catalyst inhibition. Cyclopropenes, at least these days, are best prepared using rhodium(II) catalyzed cyclopropenation of alkynes.