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5961169 
Journal Article 
INTERPHASE INTERACTION OF STYRENE WITH FORMALDEHYDE CATALYZED BY ORGANIC SULFONIC-ACIDS 
Sharf, VZ; Litvin, EF; Kasymova, KA; Afanasev, VA 
1985 
1 
Bulletin of the Academy of Sciences of the USSR. Division of Chemical Science
ISSN: 0568-5230 
34 
7 
1337-1341 
English 
WOS:A1985AZJ4800001 
1. Aromatic sulfonic acids are active catalysts in the reaction of styrene with formaldehyde, a reaction that proceeds in a two-phase system; their specific catalytic activity (based on one SO3H group) exceeds by far the activity of sulfuric acid. 2. The catalytic action of alkylbenzenesulfonic acids (ABSA) in the Prins reaction depends on their lyophilicity. Water-soluble ABSA-300 is less active than water-oil-soluble ABSA-440 and oil-soluble ABSA-500 and ABSA-550. The maximum catalytic effect of ABSA-440 is observed when the reaction is carried out with styrene diluted with ethylbenzene. 3. It was demonstrated experimentally that, in the presence of alkylbenzenesulfonic acids, the process takes place primarily in the organic phase. © 1986 Plenum Publishing Corporation.