Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1990-01-02
1990-07-31
Gray, Bruce
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
570254, C07C 4500
Patent
active
049451863
ABSTRACT:
A method of producing 3-bromobenzaldehyde is disclosed, wherein, upon producing 3-bromobenzaldehyde by allowing benzaldehyde to react with bromine in the presence of brominating catalyst in 1,2-dichloroethane being a reaction solvent, 1,2-dichloroethane having been used for aforesaid reaction as a reaction solvent is recovered and, after the recovered solvent is allowed first to react with chlorine in the presence of above brominating catalyst, the reaction is performed by the addition of benzaldehyde and bromine. Foregoing 1,2-dichloroethane recovered may be brought to the reaction with chlorine with or without adding fresh 1,2-dichloroethane and above brominating catalyst is preferably aluminum chloride.
REFERENCES:
patent: 3961033 (1976-06-01), Kleiman et al.
patent: 4036887 (1977-07-01), Sheldon et al.
patent: 4551557 (1985-11-01), Ratton et al.
patent: 4551558 (1985-11-01), Ratton et al.
patent: 4585898 (1986-04-01), Lau et al.
Organic Preparations and Procedures Int. 6(5), 251-253 (1974), "An Improved Procedure for the Meta-Bromination of Aromatic Carbonly Compounds".
Journal of Organic Chemistry, vol. 23, 1412 (1958), "The Swamping Catalyst Effect. II. Nuclear Halogenation of Aromatic Aldehydes and Ketones".
Matsuura Shinichi
Miyano Osamu
Gray Bruce
Toso Organic Chemical Co., Ltd.
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