You can think of electrophile = lewis acid nucleophile = lewis base
Nucleophiles have a free lone pair electron to attack the electrophile.
Or you can see which molecule has a good leaving group. Electrophiles have leaving group
Once you do enough problems, you can usually identify nucleophiles right away since they reuse a lot of the typical nucleophiles like Tert BuOK, MeOH, etc
For nucleophiles, look for a negative charge or lone pairs that can attack. Write it like this :Nu-. Negative attacks positive. :Nu- -------> E+
For electrophiles, look for a positive charge or electron deficiency or partial positive. Write it like this E+. Positive is attacked by the negative E+ <--------:Nu-
Another way to remember is that nucleophiles are so negative and can't stand looking at positives be happy so it attacks anything that's positive b/c misery loves company. Kay, that was kinda dumb, but it helps to form association to help recall if the two really confuse you).
This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies and terms of service.