LXX.—The action of phosphorus pentachloride on the methylene ethers of catechol derivatives. Part IV. Derivatives of dihydroxyphenyl-acetic, -glycollic, and -glyoxylic acids

George Barger, Arthur James Ewins
1909 Journal of the Chemical Society Transactions  
doi:10.1039/ct9099500552 fatcat:i7nxe7siozbifn2xttyr6tn7oy