I am working with with some chemical reactions in which I have the following bond.OH-B-O-Si-O-B-OH. as you can see the OH on both ends. I am trying to terminate the OH on both ends or at least block them. Everything I have tried so far break my Si-O-B bonds and gives me Si-O which is silicone oil and Boron. I have tried FDTS, TEOS, and all other curing agents but nothing seems to work? Is there anyone who can help me with this please?