any tips for cramming for an Organic Chemistry 2 exam? all nighter, here I come...?

Don't get too bogged down with memorizing EVERYTHING...it's a little too late. Focus specifically on what the professor emphasized in class. I used to try doing ALL of the problems at the ends of the chapters, you could try maybe doing every other one and at least looking at the solutions to all of the others.

It helped for me to re-write notes...important reactions and mechanisms. etc. Another little trick that helps me retain info is to say it out loud. Pretend like you're teaching it to someone.

All-nighters are tough once you hit about 1-3 am. But fight through that and you should feel more awake...maybe a little delirious but more awake none the less.

Other tricks to stay awake...tea, apples (supposed to keep you awake better than coffee...it's worked a few times for me...sometimes not), or go take a walk outside. It especially helps if it's chilly out. I did that with my friends a lot. I brought my notes outside and we walked and sat on the bench for 10-15 minutes.

Good luck! You can do it!