But boron is extremely rare in the universe, and I can't imagine you'd ever find an ocean of it. Phosphorous could lead to some wild chemsitry, but way too reactive. You also need to think about the climate where your bizarre life will live. If it's too cold, few reactions will take place. Too hot, and molecules will crash into each other and fly apart before they get large enought to be interesting.
Pure solids are boring.
The trick is getting an ocean-sized body of any other liquid. Maybe you can have life in a gas, probably at high pressure to keep atoms reasonably close to each other. If that sounds interesting, email me. I also believe that Stephen King did an epistolary short story in either Skeleton Crew or Night Shift. It's an interesting question.