Electrochemical process for thiocyanating aminobenzene compounds

Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Preparing organic compound

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205431, 205444, C25B 300

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active

055736530

ABSTRACT:
An improved electrochemical process for thiocyanating aminobenzene compounds (e.g., 3,4-dichloroaniline), and in particular a process for preparing 2-aminobenzothiazole compounds, is disclosed which provides attractive yields under relatively favorable temperature conditions, and with reduced or minimal cyanide formation. In a further aspect, use of quaternary ammonium salts in the thiocyanation medium has been found to inhibit cathodic corrosion.

REFERENCES:
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Mel'nikov et al., J. Gen. Chem. (U.S.S.R.) 14, 113-15 (1994).
Organic Reactions, vol. III, ed. by Adams et al., John Wiley & Sons, Inc., New York (1946), pp. 242-257. no month.
Cauquis et al., C.R. Acad. Sc. Paris, t. 266 (1968), pp. 883-886. no month.
Yoshida et al., "Anodic Oxidations (Part VI) Para-Cyanation of Diphenylamines", J. Org. Chem., vol. 37, No. 25, pp. 4145-4147 (Dec. 15, 1972).
Khrishnan et al., "A Two-Phase Electrochemical Method For Thiocyanation", Synth. Commun., 22(19), 2741-4. 1992.
Mel'nikov et al., "Electrochemical Thiocyanation of Organic Compounds. III. p-Substituted Aromatic Amines", J. Gen. Chem., vol. 14 (no month, 1994), pp. 113-115. Chemical Abstract.

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