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Amino acids were found to be as good ligands for copper-catalyzed borylation reactions of primary and secondary alkyl halides, and the B 2 pin 2 acted as bi-boron source for borylation. The high reaction efficiency and mild conditions make the new catalyst system a useful alternative to the recently developed methods for the preparation of alkylboronic esters.
The protected (2S,4R)-2-amino-4-methyldecanoic acid, a proposed component of culicinins has been synthesized over 10 steps and in total 28% yields using Wittig reaction and Schöllkopf amino acid synthesis as key steps.
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