d
4
C
(125 MHz; CDCl
7.49, 119.25, 129.77, 137.52.
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General procedure for the epoxidation of olefins
Epoxidations were performed with the corresponding alkylim-
idazolium peroxotungstate in a 25 ml standard Schlenk tube.
After 30 mmol catalyst was added, 0.5 mmol H
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substrate and 1 ml solvent was then charged into the Schlenk
◦
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define the GC selectivity of reaction products as the ratio of the
epoxide moles to the total moles of all products.
2
617–2620.
7
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The authors are grateful for the support from the National
Natural Science Foundation of China (No. 20773037), the Com-
mission of Science and Technology of Shanghai Municipality
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