Thanks for responding.
The only issue is I'm not doing the redirection in Apache. Rather doing it in Wordpress using a Redirection plugin that allows me to enter redirections on URL's in regex.
So I basically need to get a match on "%e2%80%9c" and "%e2%80%9d".
I tried the following based on your example (which did not work):
Source URL: /2007/04/06/rantings-%e2%80%9cmore-wailing%e2%80%9d-written-3407/ (external request)
Regex: /2007/04/06/rantings-(/%\w)more-wailing(/%\w)-written-3407/ (redirection plugin field)
Target URL: /2007/04/06/rantings-more-wailing/ (redirection plugin field)
Any further input or ideas you might have would be greatly appreciated.