geezmeister : Why fight the odds? Take the time to do a long wet reflux and save your sanity, your precursors, and your pocket book. Increase your chance of success. Improve the dope you make. The dryer reactions CAN be pulled off successfully IF you know what you are doing. Even then, the quality of the product will seldom match that of the LWR, and the yield never will. I say that from experience with both types of reactions. The LWR is like falling off a log compared to the dry cooks. Why do things the hard way?
Well, SWIM would still like to try a hot dry rxns before attempting LWR. Can you give any precisely ration between ephedrine/water (assuming LG precursors)? Like 5mL/10g eph.
rgs, place
Can you give any precise ratio between ephedrine/water (assuming LG precursors)?
1ml water/40g ephed. If rp is used or I2 is homemade they're probably somewhat wet and you can lower the amount of water added to 1/2ml. 1ml is equal to one full 100unit insulin syringe. If you need to add more you can always do it as the reaction progresses.
http://www.webelements.com/webelements/compounds/text/P/I3P1-13455011.html (http://www.webelements.com/webelements/compounds/text/P/I3P1-13455011.html)