Process for the preparation of fluorobenzenes

Details Process for the preparation of fluorobenzenes Process for the preparation of fluorobenzenes

1989-07-14

1990-06-26

Evans, J. E.

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

Organic compounds

Halogen containing

570127, C07C 1724, C07C 1733, C07C 2513

Patent

active

049373951

ABSTRACT:
A process for the preparation of fluorobenzenes of the formula I ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are equal or different and represent H, F, Cl or alkyl having from 1 to 3 carbon atoms, at least one of these radicals being fluorine, and S.sup.1 and S.sup.2 being equal or different and represent H or a group reducing the electron density at the benzene nucleus, which comprises subjecting a compound of the formula II ##STR2## in which R.sup.1, R.sup.2, R.sup.3, S.sup.1 and S.sup.2 have the aforementioned meaning to a decarbonylation at a zeolite catalyst.

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G. Schiemann et al., Berichte d. D. Chem. Gesellschaft 62:3035-3043 (1929) (In German).
D. T. Flood, Organic Syntheses, Coll. 2:295-298 (1943).
K. G. Rutherford et al., J. Org. Chem. 26:5149-5152 (1961).

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