Alkyl iodides and alkyl bromides can be conveniently converted to N-protect
ed O-alkyl aminooxy compounds by treatment with N-(tert-butyloxycarbonyl)hy
droxylamine and DBU. The reaction is tolerant of hydroxyl groups and carbox
ylate esters which can be further derivatized and thus serve as precursors
for a number of functionalized O-alkyl aminooxy ethers. The reaction can be
accomplished neat or with methylene chloride as solvent. (C) 2000 Elsevier
Science Ltd. All rights reserved.