deuterated solvent (CDCl3)
used for NMR spectroscopy, silica gel 60 (230–400 mesh) for
column chromatography, trifluoroacetic acid, p-chloranil,
MB, DPBF, triethylamine, benzene, acetonitrile, sodium ascorbate,
copper sulfate pentahydrate, cresyl violet, and boron trifluoride
diethyl etherate were provided by Merck. The following chemicals were
obtained from Sigma-Aldrich: ethanol, methanol tetrahydrofuran, sodium
thiosulfate, dimethyl sulfoxide, 2,4-dimethylpyrrole, N,N-dimethylformamide, acetone, dichloromethane,
iodic acid, iodine, hexane, sodium sulfate, N-bromosuccinimide, and glacial acetic acid. n-Butylamine was purchased from Alfa Aesar. The following
chemicals were obtained from Acros Organics: piperidine and 4-hydroxybenzaldehyde.
Bromo-1,8-naphthalic anhydride was purchased from TCI. Zinc phthalocyanine
and 1-azido-1-deoxy-β-
were purchased from ABCR. The rest of the chemicals used in the synthesis
were of reagent grade unless otherwise specified.