Copper-Catalyzed Borylation of Cyclic Sulfamidates: Access to Enantiomerically Pure (β-and γ-Aminoalkyl)boronic Esters
作者:Nina Ursinyova、Robin B. Bedford、Timothy Gallagher
DOI:10.1002/ejoc.201501492
日期:2016.2
Abstract Cyclicsulfamidates undergo borylation under copper‐catalyzed conditions using B2pin2 to give enantiomerically (and diasteromerically) defined (aminoalkyl)boronicesters. External iodide is essential, but the intermediacy of simple alkyl iodides has been excluded; N‐sulfated intermediates are key in the borylation sequence. Based on stereochemical studies and trapping experiments, the involvement
Substituted 1,4-Benzoxazepines, 1,5-Benzoxazocines, and N- and S-Variants
作者:Janjira Rujirawanich、Timothy Gallagher
DOI:10.1021/ol9023453
日期:2009.12.3
4-tetrahydrobenzoxazepines, benzothiazepines, and benzodiazepines. Application of this methodology to 1,3-cyclic sulfamidates affords a parallel entry to the analogous substituted 1,5-benzoxazocines and 1,5-benzodiazocines.