For instance, 4,4,5,5-tetramethyl-2-(thiophen-3-yl)-1,3,2-dioxaborolane can be treated safely with BuLi; or the presence of -boronic ester would give trouble. Is any other reagent such as LDA can be used to ensure clean reaction.
Eric B. J. Harris
No, the inherent lewis acidity of boron is probably too high for BuLi. It will form the lithium butyl borate salt which would likely further rearrange or fragment. A hindered non nucleophilic base such as LiTMP may be worth trying but failure would be unsurprising.
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