Methods of forming alpha, beta-unsaturated acids and esters

  • US 20040110974A1
  • Filed: 12/09/2002
  • Published: 06/10/2004
  • Est. Priority Date: 12/09/2002
  • Status: Active Grant
First Claim
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1. A method of forming an alpha, beta-unsaturated compound comprising:

  • mixing an initial amount of a carboxylic acid with at least one of an alpha-hydroxy acid and an alpha-hydroxy ester;

    esterifying a first portion of the initial amount of the carboxylic acid to from an alpha-acyloxy derivative of the at least one of an alpha-hydroxy acid and an alpha-hydroxy ester, the esterifying producing an amount of water;

    recovering a second portion of the initial amount of the carboxylic acid in combination with at least some of the amount of water; and

    transforming the alpha-acyloxy derivative into an alpha, beta-unsaturated derivative.

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