Process for making 4-chloro-2-methyl-5-nitro-phenol

Details Process for making 4-chloro-2-methyl-5-nitro-phenol Process for making 4-chloro-2-methyl-5-nitro-phenol

1989-05-17

1990-10-02

Lone, Werren B.

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

Organic compounds

Oxygen containing

568706, 568713, C07C 7932

Patent

active

049609556

ABSTRACT:
The process of making 4-chloro-2-methyl-5-nitro phenol (I) ##STR1## comprises nitrating a 4-chloro-2-methyl-phenyl sulfonate of the formula (II) at the 5 position ##STR2## in which R is a residue selected from the group consisting of methyl-, ethyl-, trifluoromethyl-, phenyl- and tolyl and the sulfonyl residue comprises --SO.sub.2 R at the position 5 to form 4-chloro-2-methyl-5-nitro-phenyl-sulfonate and then cleaving the sulfonyl residue of the 4-chloro-2-methyl-5-nitro-phenyl-sulfonate to form the 4-chloro-2-methyl-5-nitro-phenyl. The process uses technically available and economical starting materials and allows an isomerically pure product to be made in very good yield.

REFERENCES:
patent: 3312599 (1967-04-01), Koshland, Jr. et al.
patent: 3903178 (1975-09-01), Nakamura et al.
patent: 4038328 (1977-07-01), Pelster

Affiliated with

Also associated with

Rating

Process for making 4-chloro-2-methyl-5-nitro-phenol 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 making 4-chloro-2-methyl-5-nitro-phenol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making 4-chloro-2-methyl-5-nitro-phenol will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-293938