Process for preparing 2-nitro-4,6-dichloro-5-methylphenol

Details Process for preparing 2-nitro-4,6-dichloro-5-methylphenol Process for preparing 2-nitro-4,6-dichloro-5-methylphenol

1976-01-02

1977-07-26

Helfin, Bernard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260623R, 260505R, 260512R, C07C 7932, C07C 3926

Patent

active

040383288

ABSTRACT:
2-NITRO-4,6-DICHLORO-5-METHYLPHENOL IS PREPARED BY THE SULFONATION OF 4-CHLORO-5-METHYLPHENOL TO FORM 2-SULFO-4-CHLORO-5-METHYLPHENOL WHICH IS CHLORINATED TO 2-SULFO-4,6-DICHLORO-5-METHYLPHENOL WHICH IS IN TURN REACTED WITH NITRIC ACID TO FORM THE DESIRED PRODUCT. The sulfonation is carried out with concentrated sulfuric acid at elevated temperatures to form 2-sulfo-4-chloro-5-methylphenol. Thereafter the reaction mixture is diluted with water to a sulfuric acid content of 20-30%. The resulting 2-sulfo-4-chloro-5-methylphenol is chlorinated with chlorine at elevated temperature and normal or elevated pressures to form 2-sulfo-4,6-dichloro-5-methylphenol which is then reacted with nitric acid.

REFERENCES:
patent: 2249757 (1941-07-01), Flett
patent: 3903178 (1975-09-01), Nakamura et al.

Affiliated with

Also associated with

Rating

Process for preparing 2-nitro-4,6-dichloro-5-methylphenol does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing 2-nitro-4,6-dichloro-5-methylphenol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing 2-nitro-4,6-dichloro-5-methylphenol will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-726347