I'll get to it, if I find myself, watching grass grow.
No. When I read Catcher in the Rye, I don't believe I'd even heard of Portnoy's complaints. I'm still not sure what they were, since I never read Roth's book.
I don't remember Portnoy in Catcher In the Rye. He was in a much later book called Portnoy's Complaint.