ILPT think active carbon is best to use whilst the goodies are in the organic solvent. Almost Every recrystallization ILPT performed in proper chem lab. for research and manufacturing heterocyclic compounds followed those simple steps
1, Transfer ? mg of your goo to boiling flask
2, Add ? ml of organic solvent (swim should use selective one and as volatile as possible(like DCM,Et2O,CS2, etc. )
3, Provide flask with condenser and slowly bring to boil, let it reflux for few minutes.
4, Add ? grams of active carbon (roughly 1 gram for 100 ml of almost saturated solvent)
5, Reflux for 2 minutes or so.
6, While hot filter out active carbon(use regular filtration, no vacuum).
5, Distil off about three quarters of the solvent(the best is vacuum distillation)
6, Let it cool and crystallize slowly
7, Filter off the crystals on the buchner infundibulum :d using vacuum
NOTES:
a,in step 2 use a bit more solvent then is your theory because in step 6 some of it will evaporate
b, in step three is optional to remove the flask and gently shake it few times or using stirring rod, just to be sure that more goodies will move from goo to the solvent
c,ILPT would probably decant solvent to the other clean flask before,step 4
leaving undissolved residue(if any presented in solution) behind
d,In step 6, is optional use a litlle bit of clean hot solvent to wash the folded filter paper with charcoal residue after main filtration is done
e, swim can also use freeze precip. but heptane is not as volatile. maybe pentane would be handy :?: (now ILPT talking about dmt, he hasn`t play with bufo or harmala alk. yet )
Swim should definitely try this before start to arsing with time eating chromatography.
?-mean that swim have to find out cos ILPT never played with spicely potent plant extract in lab mentioned above
SWIM will lost some of the precious but most likely end up with non sticky product
GOOD lUCK