Synthesis of ortho-chlorobenzalmalononitrile

Details Synthesis of ortho-chlorobenzalmalononitrile Synthesis of ortho-chlorobenzalmalononitrile

1974-08-12

1976-06-15

Gotts, Lewis

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C12170

Patent

active

039637700

ABSTRACT:
Disclosed herein is a synthesis of ortho chlorobenzalmalononitrile by reacting malononitrile with ortho-chloro benzaldehyde in methanol in the presence of a basic catalyst; separating the product crystals from the methanol; washing the crystals with fresh methanol; combining the wash methanol with the methanol filtrate and using the combined methanol in another similar synthesis run and repeating a series of such runs; drying the crystals with a current of turbulent dry air and scrubbing the air with base solution thereby substantially reducing associated problems of effluent treatment and ambient air pollution.

REFERENCES:
patent: 3250798 (1966-05-01), Shulgin
patent: 3715379 (1973-02-01), Berry, Jr. et al.

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