Asymmetric photochemical reaction process

Details Asymmetric photochemical reaction process Asymmetric photochemical reaction process

1988-03-28

1990-12-11

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415771, 20415782, 20415772, 20415787, 20415793, B01J 1908

Patent

active

049768344

ABSTRACT:
An optically active substance having an optical purity of at least 50% e.e. is obtained by an asymmetric photochemical reaction by converting a starting, achiral material in a chiral crystalline form and irradiating light to the chiral crystalline form to effect the photocyclization of the starting material.

REFERENCES:
patent: 3507761 (1970-04-01), Kropp
patent: 3576008 (1971-04-01), Schumacher
patent: 4754029 (1988-06-01), Kaneko
patent: 4898654 (1990-02-01), Toda
M. E. Kuehne, D. A. Horne, "Photochemical Cyclization of Olefinic N-Chloroamides", J. Org. Chem., vol. 40, No. 9, 1975, pp. 1287-1292.

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