Process for preparing 1,3-bis(halomethyl)phenobarbitals

Details Process for preparing 1,3-bis(halomethyl)phenobarbitals Process for preparing 1,3-bis(halomethyl)phenobarbitals

1974-05-17

1976-03-30

Gallagher, R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D23962

Patent

active

039474437

ABSTRACT:
1,3-Bis(halomethyl)phenobarbitals are prepared by reacting phenobarbital with formaldehyde and a chlorine source or a bromine source at a temperature of -10.degree. to 200.degree.C in the presence of a Lewis acid catalyst, the formaldehyde and bromine or chlorine source being employed in at least approximately twice the molar amounts of phenobarbital. These compounds are useful anticonvulsant agents.

REFERENCES:
patent: 3595862 (1971-07-01), Vida
patent: 3635980 (1972-01-01), Vida et al.
patent: 3679683 (1972-07-01), Gorbaty

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