Water → 2-Triphenylphosphoranylidene-1,4-butanedioic Acid

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Reaction Steps

The title compound was prepared by stirring 3-triphenylphosphoranylidene dihydro-2,5-furandione (5.0 g, 0.014 mole) for 48 hours in 100 ml water. The solid residue was isolated by filtration and air-dried to give essentially quantitative yields of a product as a white crystalline solid whose IR spectrum and elemental analysis corresponded to the structure ##STR9## Calc. for C22H19O4P: C, 69.84; H,5.06; P, 8.19. Found: C, 69.86; H, 5.16; P, 8.18.

Provenance & Evidence