Accelerated catalysis of olefinic epoxidations

Details Accelerated catalysis of olefinic epoxidations Accelerated catalysis of olefinic epoxidations

1997-04-16

1999-08-17

Owens, Amelia

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D30300

Patent

active

059395680

ABSTRACT:
Rhenium-catalyzed epoxidation of olefinic substrates is accelerated by the use of acclerants having a nitrogenous aromatic heterocyclic structure. Use of the accelerants also enables the use of aqueous hydrogen peroxide as an oxidant. To achieve optimum acceleration, the accelerant should have a concentration within a range from 2.0 mole percent to 100 mole percent of the acclerant with respect to 1 mole of the olefinic substrate. Use of the accelerant also results in an increased yield with respect to the conversion of the olefinic substrate to epoxide product.

REFERENCES:
patent: 5618958 (1997-04-01), Tucker et al.
Herrmann et al, Angew. Chem., Int. Ed. Eng. (1991), 30, 1638-1641, 1991.
Herrmann et al, J. Mol. Catal., (1994), 86, 243-266, 1994.

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