for the following products
1-(Triisopropylsilyl)-1H-pyrrole-3-boronic acid pinacol ester | 3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(triisopropylsilyl)-1H-pyrrole and 3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-[tris(1-methylethyl)silyl]-1H-pyrrole
