Hi fellas! Can anyone help me out with alcohol synthesis and oxiranes?

Question

anonymous · Answer

attachment

anonymous · Answer

I need to show which reaction will occur every time, which side will be open.

anonymous · Answer

@Kainui is there any chance you're online?

anonymous · Answer

I know it's all about the inductive effect, but I don't get the difference between those reactions....

kainui · Answer

There was a saying that made it simple to remember in case you couldn't figure out the mechanism, BLAM which stands for Bases Least Acids Most. So Bases will add to the Least substituted part while Acids will add to the most substituted part. A mechanism for each will look like this though: |dw:1423578818267:dw| |dw:1423578968806:dw| I left the last step blank on the first one for you to figure out.