4,4'-Diphenyl ether-dialdehyde-bis-dimethylacetal

Details 4,4'-Diphenyl ether-dialdehyde-bis-dimethylacetal 4,4'-Diphenyl ether-dialdehyde-bis-dimethylacetal

1981-12-21

1983-09-20

Helfin, Bernard

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

Organic compounds

Oxygen containing

204 59R, C07C 43263

Patent

active

044058160

ABSTRACT:
Disclosed is the novel compound 4,4'-diphenylether-dialdehyde-bis-dimethylacetyl of the formula ##STR1## and a process for its preparation from di-p-tolyl ether ##STR2## by anodic oxidation of the latter in the presence of methanol and of a supporting electrolyte. The anode material used in this reaction is preferably platinum, lead dioxide, graphite or vitreous carbon, and the cathode material used is preferably steel, nickel, or graphite. The supporting electrolyte used is preferably NaOCH.sub.3, KOH, KPF.sub.6, CsF, NaBF.sub.4, LiBF.sub.4, tetraethylammonium p-toluenesulfonate, H.sub.2 SO.sub.4 or CH.sub.3 OSO.sub.3 H, individually or as a mixture.

REFERENCES:
patent: 4284825 (1981-08-01), Degner et al.
patent: 4318783 (1982-03-01), Buhmann et al.
K. Sasaki and H. Urata, "Anodic Methoxylation of Alkylbenzenes," Electrochimica Acta, 1967, vol. 12, pp. 137-146.
S. Tsutsumi and Kikyhiko Koyama, "Anodic Substitution and Addition Reactions," The Electrode Reactions of Organic Compounds, pp. 247-253.
K. Yoshida, Shigi, and T. Fueno, "Anodic Oxidations, VII, Nuclear Cyanation of Methylanisoles," J. Org. Chem. vol. 40, No. 1, 1975, pp. 63-66.
A. Nilsson, Ulf Palmquist, T. Pettersson, A. Ronlan; "Anodic Functionalisation in Synthesis, Part 1 . . . ," Journal of the Chemical Society, pp. 708-715.

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