Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1987-12-15
1989-10-17
Shippen, Michael L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
560 10, 564154, 564162, 568 48, 568 50, 568 51, 568 52, C07C14936, C07C14970, C07C14941
Patent
active
048748854
ABSTRACT:
There is disclosed a process for the preparation of compounds of formula I or II ##STR1## from phenols by reaction with formaldehyde and mercaptans in the presence of mono-, di- or trimethylamine or mono- or diethylamine.
The symbols R.sub.1 is alkyl, hydroxy or alkoxycarbonyl substituted alkyl; alkyl; aryl, cycloalkyl or aralkyl, R.sub.2 is hydrogen, alkyl, alkenyl or halogen, R.sub.3 and R.sub.4 are independently alkyl, allyl, cycloalkyl, phenyl, benzyl, halogen or --CH.sub.2 --S--R.sub.1, Z.sub.1 is --S-- or alkylene, and Z.sub.2 is hydrogen, alkyl or --CH.sub.2 --S--R.sub.1.
The mercaptomethylphenols are valuable antioxidants for plastics, elastomers, mineral oils and synthetic lubricants.
REFERENCES:
patent: 2417118 (1947-03-01), McCleary
patent: 3553270 (1971-01-01), Wollensak
patent: 4304940 (1981-12-01), Wedemeyer
patent: 4741846 (1988-05-01), Evans
Roberts, "Basic Principles of Organic Chemistry", pp. 641-652, (1964).
F. Poppelsdorf et al., J. Chem., Soc. 1954, 1124.
Evans Samuel
Luisoli Reto
Martin Roger
Meier Hans R.
Stegmann Werner
Ciba-Geigy Corporation
Hall Luther A. R.
Shippen Michael L.
LandOfFree
Process for the preparation of mercaptomethylphenols 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 the preparation of mercaptomethylphenols, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of mercaptomethylphenols will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1744695