Process for the free-radical chlorination or bromination of meth

Details Process for the free-radical chlorination or bromination of meth Process for the free-radical chlorination or bromination of meth

1992-10-02

1998-03-03

Siegel, Alan

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

544353, 562840, 562849, 562864, 562834, 570144, 570198, C07D24136, C07C 2200, C07C 1700, C07C 5158

Patent

active

057236135

ABSTRACT:
Methyl aromatic compounds of the formula (I) ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 have the meaning given in the description,
can be reacted in an advantageous manner using free-radicals to give the associated trichloromethyl or tribromomethyl aromatic compounds, if the reaction is carried out in the presence of one or more chlorides or bromides of the heavy alkali metals.

REFERENCES:
patent: 3230268 (1966-01-01), Kobayashi
patent: 4046656 (1977-09-01), Davis et al.
patent: 4439620 (1984-03-01), Klauke et al.
patent: 4950813 (1990-08-01), Doscher et al.
Houben-Weyl, Methoden der Org. Chemie, V/III, pp. 716, 1962.
German Patent Specification 234,290, Mar. 27, 1909, p. 116.
J. Chem. Soc. 121, Aug. 8, 1922, pp. 2212-2215.

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