htaccess redirects with special characters

I'm moving a site from Interspire to WooCommerce and need to sort some htacess redirects but I'm having issues with special characters. For example I need...

/products/12"-x-1"-White%7B47%7DRed-Numbered-1%252d24-Nativity-Design-%252d-%28Pack-6%29.html

to redirect to

/shop/12-x-1-whitered-numbered-1-24-nativity-design-pack-6/

but I can't get it to work seemingly due to the special characters (ie. all other 'normal' redirects are working OK).

Anyone got any ideas how to handle the special characters (") and possibly the % stuff?!