Hydrogen peroxide urea adduct, UHP
Urea-hydrogen peroxide is a non-toxic, odorless crystalline solid. This adduct, which contains 35% of H2O2, sets the hydrogen peroxide free during its application.
Recent Literature
Eco-friendly laboratory procedures allow the oxidative iodination
of various activated and deactivated arenes with molecular iodine, in the
presence of UHP (percarbamide), a stable, strongly H-bonded, solid urea-hydrogen
peroxide adduct as the oxidant.
P. Lulinski, A. Kryska, M. Sosnowski, L. Skulski, Synthesis, 2004,
441-445.
Urea-hydrogen peroxide adduct (UHP) is stable, inexpensive and an easily handled
reagent. UHP is used in an efficient solid state oxidation of different
organic molecules: hydroxylated aldehydes and ketones (to hydroxylated phenols),
sulfides (to sulfoxides and sulfones), nitriles (to amides) and nitrogen
heterocycles (to N-oxides).
R. S. Varma, K. P. Naicker, Org. Lett.,
1999,
1, 189-191.
R. S. Varma, K. P. Naicker, Org. Lett.,
1999,
1, 189-191.
R. S. Varma, K. P. Naicker, Org. Lett.,
1999,
1, 189-191.
R. S. Varma, K. P. Naicker, Org. Lett., 1999, 1, 189-191
A general, high yielding, and user and environmentally friendly catalytic
oxidation procedure for the chemoselective oxidation of imines to nitrones is
reported.
G. Soldaini, F. Cardona, A. Goti, Org. Lett., 2007,
9, 473-476.
A modified procedure for the direct synthesis of hypervalent [bis(trifluoroacetoxy)iodo]arenes
avoids the use of hazardous reagents with the workup being only an aqueous
extraction.
T. Keri Page, T. Wirth,
Synthesis, 2006, 3080-3084.
