Preparation of halogenated phenols

Details Preparation of halogenated phenols Preparation of halogenated phenols

1984-12-21

1987-11-03

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

562476, 564412, 564440, 564442, 568765, 260512R, C07C 6976

Patent

active

047044691

ABSTRACT:
A method for the preparation of 2-halogenoresorcinols having the following formula I ##STR1## where X represents a halogen atom and R and R.sub.1 may be the same or different and represent a hydrogen atom or a free organic functional or functionally modified group or a hydrocarbon group, which may be substituted by one or more free organic functional or functionally modified groups and R and R.sub.1 jointly may also represent a free organic functional or functionally modified group or a hydrocarbon group which may be substituted by one or more free organic functional or functionally modified groups, and esters, ethers, or salts thereof.
The method comprises sulfonating the corresponding resorcinols which do not contain a halogen in the 2-position and then halogenating the sulfonic acids thus obtained. The halogenated sulfonic acids thereby obtained are subsequently protodesulfonated by acid hydrolysis and, if desired, any functional groups which may be present can be modified.

REFERENCES:
Ausl. J. Chem. 25(7) 1537-1542 1972.
Weitl F. J. Org. Chem. 41(11) 2044-2045, 1976.
Komavek Joseph, Collect Czech Chem. Commun 46(3) 708-716, 1981.
Vaselinovic Draz. Glas Hem Drus. Beograd 48(9) 619-625, 1983.
EPO Search Report, EPO Application No. 84115842.1.
Chemical Abstracts, vol. 63, Dec. 20, 1985, No. 13, pp. 17102 and 17949-17950.

Affiliated with

Also associated with

Rating

Preparation of halogenated phenols does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of halogenated phenols, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of halogenated phenols will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1675092