The 2,2,2-trichloroethoxycarbonyl (Troc) group has been successfully used as a protecting
group for aminoacridines. Unlike aliphatic amines, deprotection of these aromatic
amines yields significant amounts (12-29%) of stable 2,2-dichloroethoxycarbonyl (Dioc)
by-products. Formation of bis-carbamates, through the introduction of butoxycarbonyl
(Boc) moieties as temporary protecting groups, efficiently solves this problem.
fused-ring systems - heterocycles - amino protecting group - carbamate