Author Topic: Shaking vs. stirring  (Read 2523 times)

0 Members and 1 Guest are viewing this topic.

TheBlindGenius

  • Guest
Shaking vs. stirring
« on: July 25, 2002, 05:02:00 PM »
when doing the KRV/SRV thing, using methanol as solvent and 1g pdcl2 per 50 mL safrole, why can't stirring be used instead of shaking?  KrZ's method with DMF/O2 uses stirring and gets great yields.  Why is it that shaking is emphasized in the KRV/SRV reaction?  Swim's stirrer is pretty damn fast on 10, why would oxygen not be absorbed by stirring, but by shaking only?  if stirring worked, it would be a much easier reaction, right?  no more shaking, you could just set the thing on the stirrer and come back every half hour to repressurize.

hellman

  • Guest
Shaking stirring, Shaken'dog?
« Reply #1 on: July 25, 2002, 05:58:00 PM »
Shaking, and swilling(swirling)

Well, really you want to mix the contents right?
-Place 6-8 marbles into SRV
-watch yield go up,.

hellski



IQ is the rate of logic, as Wisdom increases logic, fear & compromise decrease to reveal objectivity

El_Zorro

  • Guest
Post 325947
« Reply #2 on: July 26, 2002, 05:09:00 PM »

Post 325947

(El_Zorro: "alright, you say it's a 'lazy man's wacker', but ...", Methods Discourse)


Who is that masked man?

SPISSHAK

  • Guest
Ok check this out
« Reply #3 on: July 30, 2002, 07:18:00 AM »
Try modifying the stirbar to get greater induction of the gasses.
A friend I know was working on an invention like this.
Basically involves drilling holes in a stirbar to cause induction of gasses into solution as it spins, try it sometime I don't give bad advise, unlike some people around here.