Registry command for context menu item to copy folder name

Question

I often need to quickly copy the name of a folder in Windows 7, and so am trying to create an equivalent to the Copy as path item that appears in Extended context menus (i.e. when doing Shift+Right Click) that will copy only the name of the selected folder to the clipboard.

I've created the Registry key at:

HKEY_CLASSES_ROOT\Directory\shell\Copy folder name\command

...where all of my similar context-menu additions for folders are, and it can be seen here:

However, I've so far been unable to get the code that needs to be executed by the key working as it should. I've come across this solution to grab the current folder of a directory, and this one to pipe the directory name to the clipboard, and put them together to get the following:

for %* in (.) do set FolderName=%~nx* && echo %FolderName%| clip

This code works exactly as expected in the command line.

Prepending cmd /c to it, which is necessary to run a CMD instance from the Registry, gives the following:

cmd /c for %* in (.) do set FolderName=%~nx* && echo %FolderName%| clip

However, placing this in the value data of the Default string value in the \Copy folder name\command key, and then right-clicking a folder and clicking on Copy folder name fails to work.

Wrapping it in quotes also does nothing:

cmd /c "for %* in (.) do set FolderName=%~nx* && echo %FolderName%| clip"

What am I missing here?