We recently discovered that certain pincer complexes of iridium are uniquely competent in catalysis of dehydrogenative borylation of terminal alkynes (DHBTA). Our initial foray utilized a SiNN pincer ligand that combines an Si-H, and amido and a quinoline donor. This presentation will focus on the evaluation of a series of supoorting pincer ligands for Ir DHBTA catalysis and the insight extracted from these studies regarding the necessary features of the ligand for DHBTA catalysis. In addition, we will show how screening of the various ligands has led to greatly improved rates of turnover and longevity of the catalyst.

Pincer ligand variations in catalysis of dehydrogenative borylation of terminal alkynes

249th National Meeting (2015)

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