There used to be an effort based on perlito to bring Perl6 to the perl5 language. It was created by fglock and you can still find the module on CPAN. However, it is quite outdated by now. Another way to bring Perl6 to the perl5 language and interpreter is to use Inline::Perl6, which was made by nine (Stefan Seifert). You can find that module on cpan, as well.
Perl 6 features are also coming to Perl 5 in other ways, see Perl 6 for Perl 5.