Oxidative Geminal Functionalization of Organoboron Compounds
作者:Zhi He、Piera Trinchera、Shinya Adachi、Jeffrey D. St. Denis、Andrei K. Yudin
DOI:10.1002/anie.201206501
日期:2012.10.29
Excellent tolerance: Stable acylboronates equipped with N‐methyliminodiacetyl (MIDA) boryl groups ([B]) were prepared by using a sequence of oxidative manipulations at the boron‐bound carbon center (green in scheme). Chemoselective transformations of these acylated organoboron building blocks yielded a range of multifunctionalized boron derivatives and supplied access to valuable borylated heterocycles (see
Boroalkyl Group Migration Provides a Versatile Entry into α-Aminoboronic Acid Derivatives
作者:Zhi He、Adam Zajdlik、Jeffrey D. St. Denis、Naila Assem、Andrei K. Yudin
DOI:10.1021/ja304173d
日期:2012.6.20
exemplifying migration of boron-substituted carbon is described. We show that α-boroalkyl groups of transient boroalkyl acyl azide intermediates readily migrate from carbon to nitrogen. This process allows access to a new class of stable molecules, α-boryl isocyanates, from α-borylcarboxylic acid precursors. The methodology facilitates synthesis of a wide range of α-aminoboronic acid derivatives, including