301 redirect for html files in one directory only to Custom Post Type in Wordpress - html

Question

I am struggling to get my head around an htaccess rule to redirect requests for an html file to go to a custom post. I have looked on here and in other places and nearly got there.
I want to redirect ONLY mydomain.com/profiles/.html to mydomain.com/name_profile/
So mydomain.com/profiles/smith.html to mydomain.com/name_profiles/smith. There are some 900 html files to be redirected and they are all contained in this directory. Other html files in the domain I need to leave correctly associated.
I currently have
RedirectMatch 301 ^/([^/]+)/([^/.]+)\.html$ /$1/$2/
RedirectMatch 301 ^/([^/]+)/([^/]+)/([^/.]+)\.html$ /$1/$2/$3/
But this redirects all html pages not just the ones in the profiles directory.
I am new at htaccess and have found several tutorials but none at a level I can understand, so any help is most welcome.

Answer 1

Place this rule just below RewriteEngine On line:
RewriteRule ^profiles/([^.]+)\.html$ /name_profiles/$1 [L,NC,R=301]

Answer 2

Use this rule:
RewriteEngine On
RewriteRule ^profiles/([^.]+)\.html/? name_profiles/$1 [DPI,L,R]
Or better, remove your RewriteMatch rules and replace with this:
RewriteEngine On
RewriteRule ^([^/]+)/([^/.]+)\.html/? $1/$2 [DPI,L,R]
RewriteRule ^([^/]+)/([^/]+)/([^/.]+)\.html/? $1/$2/$3 [DPI,L,R]
This assumes that mod_rewrite is both installed and activated for htaccess files.
If you are not sure, to check if mod_rewrite is installed, look at the list of installed modules in the output of phpinfo();
By default, mod_rewrite is not enabled for htaccess files. If you are managing your own server, open httpd.conf
and make sure that the webroot directory block contains one of these lines: AllowOverride FileInfo or AllowOverride All