zbde00
Harmless
Posts: 25
Registered: 18-2-2005
Member Is Offline
Mood: No Mood
|
|
help:The synthesis of N,N-dimethylformamide di-tert-butyl acetal
i found a paper about the synthesis of N,N-dimethylformamide di-tert-butyl acetal using ester exchange.I repeat it,but the yield is very low,10%
Is there anyone can give more information about this?
thx in advance!
|
|
IPN
Hazard to Others
Posts: 156
Registered: 31-5-2003
Location: Finland
Member Is Offline
Mood: oxidized
|
|
How about posting/attaching the synthesis for starters? That might help a little..
|
|
Caffinehog
Harmless
Posts: 9
Registered: 3-3-2005
Location: Under a rock somewhere
Member Is Offline
Mood: Unstable
|
|
Is the product more volatile than the reactants? On the off chance that it is, you could distill it off, driving the reaction to completion.
I don\'t understand what you are saying, but I agree with every word of it!
|
|
sparkgap
International Hazard
Posts: 1234
Registered: 16-1-2005
Location: not where you think
Member Is Offline
Mood: chaotropic
|
|
Maybe not. MSDS from Alfa Aesar says that DMF t-Bu acetal boils @ 75-77 °C @ a pressure of 12 mm Hg, implying that it will boil hotter at normal
pressures, and that DMF boils at 153 °C at normal pressures. I'm feeling slightly lazy employing Clausius-Clapeyron at the moment...
sparky (~_~)
"What's UTFSE? I keep hearing about it, but I can't be arsed to search for the answer..."
|
|