[fofeta]

hello i wish i find answer to my question here . i am wondering if sulfur could be dissolve in THF because i am running my rxn under inert condition and don't want any proton to get in RBF . so any suggestions to insert sulfur without removing the rubber cover .
 thank you .

[Hunter2]

There is only one solvent where sulfur can be dissolved. Its Carbon disulfid. CS₂.m THF will not work.

[Dan]

Do an inverse addition - transfer the reaction mixture (via cannula) to a sealed vessel containing sulfur under a dry, inert atmosphere. This is assuming that your reaction mixture (without S) is homogeneous.

Depending on how sensitive your reaction actually is, you might be able to just quickly tip in the sulfur against a low positive pressure of dry, inert gas.

[fofeta]

ya i tried to tip it quickly but I'm wondering why not all the stating materials converted to product side despite i used strong base as nbuli it seems H FLOW AROUND . thanks all i appreciate your help .

[Dan]

i used strong base as nbuli it seems H FLOW AROUND .

This is nonsense. If you ask a coherent question and you might get a useful answer.

[fofeta]

i am working on synthesis of thiolactams from amino-alkyne , so the intermediate for this is thioketene the problem is not all the SM get deprotonated by nbuli , i am wondering why ?