Journal of the American Chemical Society

Sulfanilamide Derivatives Containing Urea, Thiourea or Hydrazide Groupings

E Niemiec

Index: Niemiec Journal of the American Chemical Society, 1948 , vol. 70, p. 1067

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Citation Number: 9

Abstract

Summary A new methyl dimethylene gluconate has been isolated from the sublimate mixture obtained by heating methyl 2, 4: 3, 5-dimethylene-~-gh1conate in vacuo at 130'. The structure of the new diacetal has been shown to be methyl 2, 4: 5, 6-dimethylene-D- gluconate. The rearrangement of a six-membered methylene acetal ring to a fivemembered ring has thus been demonstrated. The application of the procedure of Hudson and Hann ...