Electrochemical dehydrogenation of steroidal .DELTA..sup.3,5 eno

Details Electrochemical dehydrogenation of steroidal .DELTA..sup.3,5 eno Electrochemical dehydrogenation of steroidal .DELTA..sup.3,5 eno

1980-02-20

1981-06-02

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204 72, C25B 302

Patent

active

042709946

ABSTRACT:
An improved process for the preparation of steroidal .DELTA..sup.4,6 dienones by the electrochemical dehydrogenation of the corresponding .DELTA..sup.3,5 enol ethers under basic conditions, using less than stochiometric amounds of a high potential catalyst, such as 2,3-dichloro-5,6-dicyano-benzoquinone, in a partially aqueous electrolyte solution.

REFERENCES:
patent: 3485829 (1969-12-01), Fried
patent: 3491090 (1970-01-01), Fried
patent: 3873580 (1975-03-01), Rennie
Pradham et al., J. Organ. Chem. 29, pp. 601-604, (1964).
Fried et al., Organic Reactions in Steroid Chem., vol. 1, pp. 308,313, (Van Nostrand), 1972.
Walker et al., Chem. Rev., 67, pp. 153-195, (1967).
Burn et al., Chem. and Industry, p. 497, (1966).
Bunker et al., Synthesis, p. 671, (1975).
Jackman, Advances in Organic Chem., vol. 2, pp. 329-333, (Interscience Publishers), 1960.

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