Preparation of substituted benzopinacols

Details Preparation of substituted benzopinacols Preparation of substituted benzopinacols

1978-02-13

1979-09-18

Sebastian, Leland A.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

568638, 568633, 568637, 568719, 568718, 568640, 568641, B01J 110

Patent

active

041682181

ABSTRACT:
Benzopinacol compounds can be prepared by an improved process comprising irradiating a diarylketone with UV radiation in a non-polar hydrocarbon solvent mixed with an alcohol. The volume ratio of the non-polar hydrocarbon solvent to alcohol is between 3:1 and 8:1. The benzopinacols are useful, for example, in imaging materials, such as with certain dyes that are reactive with the ketyl radicals that can be released from the benzopinacols upon heating.

REFERENCES:
patent: 3497430 (1970-02-01), French et al.
Filler et al., J. Org. Chem., vol. 40, No. 8, 1975, pp. 1173 to 1175.
Dedinas, J. Am. Chem. Soc., vol. 95, No. 21, pp. 7172 to 7174 (1973).
Schonberg, Preparative Organic Photochemistry, Springer-Verlag, N.Y., N.Y., (1968), pp. 203 to 209.
Dedinas et al., J. Phys. Chem., vol. 76, No. 26, 1972, pp. 3926 to 3933.
Research Disclosure, Oct. 1973, pp. 12 to 13, Item 11409 of DeSelms.

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