Preparation of Building Blocks for Iterative Suzuki-Miyaura Reactions via Direct Bromination of Aryl Boronic Acids: One-Pot Total Syntheses of Dictyoterphenyls A and B
作者:Chun-Young Lee、Cheol-Hong Cheon
DOI:10.1002/adsc.201700733
日期:2017.11.10
A highly efficient method for the preparation of 4-alkoxy-3-bromophenyl boronic acid N-methyliminodiacetic acid (MIDA) esters as building blocks in iterative Suzuki-Miyaura reactions from the 4-alkoxyphenylboronic acids is described using a boronic acid moiety as a blocking group in brominationreactions. With these MIDA boronates, the total syntheses of dictyoterphenyls A and B were developed in only