A Convenient Synthetic Method for β-Alkoxy- and β-Phenoxyacrylic Acids and 3,4-Dihydro-2H-pyran-5- and 2,3-Dihydrofuran-4-carboxylic Acids

Article abstract of DOI:10.1055/s-1986-31854

trans-β-Trihaloacetylvinyl ethers 1 are easily hydrolyzed by wet potassium hydroxide in benzene, yielding the corresponding acids 2 in excellent yields.This synthetic method also can be applicable to cyclic vinyl ethers 3 and 5 to yield 4 and 6 in high yi