272
Transition Met Chem (2013) 38:267–273
c = 2.0 9 10-5 mol dm-3
,
kmax
[nm]
with
e
Center (CCDC) as Supplementary Publication CCDC-
887289 for 2. Copies of the data can be obtained free of
charge on application to the CCDC, 12 Union Road,
Cambridge, CB2 1EZ, UK (e-mail: deposit@ccdc.cam.ac.uk).
[dm3 mol-1 cm-1]): 228 (12,650), 279 (53,000), 325
(49,550), 397 (23,500), 569 (100, d-d).
General procedure for the oxidation of alkenes
Acknowledgments This work was financially supported by the
University of Zanjan, the Faculty of Chemistry and Biochemistry of
¨
¨
the Ludwig-Maximilians-Universitat Munchen, and the School of
The epoxidation of alkenes with hydrogen peroxide was
performed in a 25 ml round-bottom flask. In a typical
experiment, the flask was charged with 3.0 ml of CH3CN,
1.0 mmol alkene, 0.1 g chlorobenzene as internal standard
and 1.71 lmol of catalyst. To this mixture, 3 mmol of a
30 % aqueous solution of hydrogen peroxide was added.
The reactant mixture was stirred vigorously for 5 h at the
desired temperature. At appropriate intervals, aliquots were
removed and analyzed immediately by GC. The reaction
products were quantified by gas chromatography and
identified by comparison with the retention time and spec-
tral data to those of an authentic sample. Alkene conversion
and oxidation product yields based on the starting substrate
were quantified by comparison with chlorobenzene. In
some instances, reactions were carried out on a larger scale
and the epoxides were isolated to allow further confirmation
of their identity and yields by NMR.
Chemistry.
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Supplementary data
Crystallographic data (excluding structure factors) have
been deposited at the Cambridge Crystallographic Data
123