[spirochete]

So I'm running my first semi independent organic reaction and it's been a while since my undergrad organic lab, or any chemistry labs for that matter.

I'm waiting for something to precipitate at room temperature.  It's been about 40 minutes at room temperature.  My interpretation of the instructions is that it should precipitate in this way, but 40 minutes seems excessive.

Is it possible that it could take 40+ minutes or is this unreasonably long?  It had a stirring magnet it in it to start out and I scratched the inside of the flask with metal in case it was too smooth to allow crystals to form.  I don't know if that matters.

The next step would be to poor it in ice water but the instructions are pretty clear that it should precipitate at RT first.

Faster replies are better so I can go start my weekend!  Thanks.

[sjb]

Don't know if it's too late, but where was the original reaction performed?

Room temperature in, say, Brisbane, in the middle of December is likely to be quite a bit warmer than the same in Berlin.

If you can't see anything crashing out, are you sure you have the liquor concentrated enough? Failing that, can you put your vessel into an ice bath (or colder) just to try and nucleate something?

S