Triethylamine or Ph 3 P (0.05 eq.) was found to catalyze the addition of alcohols to alkyl propiolates. The reaction occurred much more rapidly without solvent than in solvent. The E/Z ratio was relative to the reaction temperature. Water was found to inhibit the reaction.

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Catalytic Synthesis of 3-Alkoxyacrylic Acid Esters under Neat Conditions. -Under neat conditions, the presented reaction occurs much more rapidly than in solvent. The E/Z ratio is influenced by the reaction temperature. -(WANG*, J.; WANG, H.; REN, H.; Synth. Commun. 40 (2010) 7, 980-983,

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