Process for the preparation of anilines meta-substituted by chlo

Details Process for the preparation of anilines meta-substituted by chlo Process for the preparation of anilines meta-substituted by chlo

1976-01-09

1978-04-18

Wyman, Daniel E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260570D, 2605705CA, 2605706, 2605707, 2605708R, 2605709, 260571, 260573, 260575, 260578, C07C 8750, C07C 8752, C07C 9314

Patent

active

040851419

ABSTRACT:
A method of preparing a meta-chloroaniline by contacting a substituted aniline containing a chlorine substituent at other than a meta position and a chlorine substituent at the meta position with hydrogen in solution in an acid medium in the presence of a noble metal catalyst at elevated temperature and pressure. The aniline reactant can contain organo substituents on the ring. The product which results is either a 3-chloroaniline or a 3,5-dichloroaniline which similarly can contain organo substituents on the ring.

REFERENCES:
patent: 3888929 (1975-06-01), Rivier
patent: 3912783 (1975-10-01), Wedemeyer et al.
patent: 4022795 (1977-05-01), Bamfield et al.
Augustine, "Catalytic Hydrogenation", p. 128 (1965).
Handbook of Chemistry and Physics, 52nd Edition, pp. F-183 and F-186, (1971-1972).

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