The Vespiary

The Hive => Newbee Forum => Topic started by: edo on February 13, 2004, 06:36:00 PM

Title: Swim is doing a MM benzo wacker(1/2 ...
Post by: edo on February 13, 2004, 06:36:00 PM

Title: Yup, your on the right track.
Post by: pickler on February 15, 2004, 03:07:00 AM

Yup, your on the right track.

Title: thx pickler, I did use TFSE
Post by: edo on February 15, 2004, 03:23:00 AM

Title: Shit! Swim doing mm wacker and forgot to dry...
Post by: edo on February 15, 2004, 04:35:00 AM

Shit! Swim doing mm wacker and forgot to dry his ketone with 50g magnesium sulfate and he already distilled. Is that a big deal?

Title: HEy now,
Post by: wyndowlicker on February 15, 2004, 08:03:00 AM

Title: Distilling without drying
Post by: Rhodium on February 15, 2004, 09:43:00 AM

Distilling without drying works, but may cause troublesome bumping in the process, and the water will be sucked into your pump, reducing its efficiency.

Title: shit, Swim should of washed with H2O a few...
Post by: edo on February 19, 2004, 08:07:00 PM

shit,
 Swim should of washed with H2O a few times after the NaOH wash. the whole thing turned in a big black chard :( (polymerized) Swim smashed the flask to save magnetic stirr bar.  
Swim still learning the hard way

Title: did you try removing the gunky mess with ...
Post by: amine on February 19, 2004, 08:42:00 PM

did you try removing the gunky mess with hotwater before attempting to smash the flask? generally hot/boiling water will get the tar out.
;)

Title: refluxing some dcm in the flask works ...
Post by: Bond_DoubleBond on February 19, 2004, 10:45:00 PM

refluxing some dcm in the flask works extremely well to remove that tar.  or if you wanna be lazy, put some dcm in the flask and run some hot water over the flask until the dcm starts boiling and swirl it around a bit.  and if you don't wanna use your solvent dcm, you can get dcm containing (>80%) paint and adhesive removers from just about any hardware store for pretty cheap.

once your washing techniques start to improve, you won't get much of that tarry shit.  swim considers h2o washes to be essential after washing with any acid or alkaline solution.  and don't just stop with one water wash.  perform h2o washes until the ph of the aqueous phase is near neutral.

Title: Swim knew to was with H2O after NaOH wash but...
Post by: edo on February 20, 2004, 03:35:00 PM

Swim knew to was with H2O after NaOH wash but swim was tired as shit and forgot. Swim will remember the hot water/DCM to remove tar.(Hopefully never again)
Swim shouldn't have rushed but Swim had success first time making ketone and was eager to repeat it.
thx