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Preparation of diarylethanes

  • US 5,866,733 A
  • Filed: 07/12/1996
  • Issued: 02/02/1999
  • Est. Priority Date: 07/14/1995
  • Status: Expired due to Fees
First Claim
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1. A process for the preparation of a diarylethane of the formula I ##STR5## where R1 is hydrogen or C1 -C8 -alkyl, by reacting benzene with a styrene of the formula III ##STR6## where R1 has the abovementioned meanings, wherein the reaction is carried out batchwise or continuously at from 150°

  • to 350°

    C. and from 5 to 200 bar in the presence of a acidic large-pore zeolite and wherein the pressure is sufficiently high for the system to remain in the liquid or supercritical phase.

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