Thiol methylation process-reaction, recycle and regeneration of

Details Thiol methylation process-reaction, recycle and regeneration of Thiol methylation process-reaction, recycle and regeneration of

1982-07-22

1984-03-06

Ford, John M.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D25306

Patent

active

044355688

ABSTRACT:
The process of thiol methylation of butylthion using methyl bromide to produce metribuzin has been significantly improved by the development of a reaction temperature profile, the recycle of methylation process reaction supernatant, and new conditions for the regeneration of methyl bromide from used methylation process reaction supernatant.

REFERENCES:
patent: 3890317 (1975-06-01), Haglid
patent: 3897429 (1975-07-01), Haglid
patent: 3905973 (1975-09-01), Gobeil et al.
patent: 4035364 (1977-07-01), Dickore et al.
patent: 4328340 (1982-05-01), Bonse et al.

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