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Unmatched efficiency and selectivity in the epoxidation of olefins with oxo-diperoxomolybdenum(VI) complexes as catalysts and hydrogen peroxide as terminal oxidant

✍ Scribed by Swarup K. Maiti; Subhajit Dinda; Ramgopal Bhattacharyya

Publisher: Elsevier Science
Year: 2008
Tongue: French
Weight: 198 KB
Volume: 49
Category: Article
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2008.08.028

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✦ Synopsis

A great variety of olefinic substrates having aromatic, carbocyclic and aliphatic olefins are effectively and selectively oxidized with oxygen-rich molybdenum(VI) complexes, namely

5 and [PPh 4 ][Mo(O) 3 -(QO)] 6 (QOH = 8-quinolinol) as catalyst, NaHCO 3 as co-catalyst and H 2 O 2 as the terminal oxidant, at room temperature. Catalysts 1 and 4 show unmatched yield, turnover number (TON) and turnover frequency (TOF), and hence shortest reaction time.

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