Selective process for preparting 2,4- or 3,6-di-substituted phen

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

568785, C07C 3714

Patent

active

049508105

ABSTRACT:
A selective process for preparing a 2,4- or 3,6-di-substituted phenol compound which comprises reacting an olefin compound of the formula: ##STR1## wherein R.sup.1 is hydrogen, halogen, alkyl, halogen substituted alkyl, aryl, halogen substituted-aryl or alkyl substituted-aryl; and R.sup.2, R.sup.3 and R.sup.4 are the same or different and each is hydrogen, halogen, alkyl, halogen substituted-alkyl or aralkyl; with a phenol compound of the formula: ##STR2## wherein R.sup.5 is hydrogen, hydroxy, halogen, alkyl, halogen substituted-alkyl, alkoxy or --C(R.sup.6)(R.sup.7)CH(R.sup.8)(R.sup.9) (wherein R.sup.6 is hydrogen, halogen, alkyl, halogen substituted-alkyl, aryl, halogen substituted-aryl or alkyl substituted-aryl; and R.sup.7, R.sup.8 and R.sup.9 are the same or different and each is hydrogen, halogen, alkyl, halogen substituted-alkyl or aralkyl), in the presence of a phosphorus compound and a carboxylic acid compound as catalysts.
The methods of the present invention, which is used a phosphorus compound and a carboxylic acid compound as catalysts, are enable to make the separation procedures easy, make the reaction process and time short, not to produce any colored resultant product, and reduce that cost in manufacturing procedures.

REFERENCES:
patent: Re23183 (1949-12-01), Arvin et al.
patent: 2371550 (1945-03-01), Schaad
patent: 2415069 (1947-02-01), Arvin et al.
patent: 2428745 (1947-10-01), Stillson
patent: 2578206 (1951-12-01), Pines et al.
patent: 2655547 (1953-10-01), Bryner
patent: 2662869 (1953-12-01), Bloch
patent: 3201486 (1965-08-01), Bielawski et al.
patent: 3290389 (1966-12-01), Hahn
patent: 3290392 (1966-12-01), Ecke
patent: 4092367 (1978-05-01), Bridwelle et al.
Desai, "Journal of the Colour Society", pp. 3-10, Jan-Mar., (1978).
World Patent Index (Derwent) No. 74-29620V/16.
World Patent Index (Derwent) No. 86-033322/05.
World Patent Index (Derwent) No. 86-275561/42.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Selective process for preparting 2,4- or 3,6-di-substituted phen does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Selective process for preparting 2,4- or 3,6-di-substituted phen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Selective process for preparting 2,4- or 3,6-di-substituted phen will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1679062

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.