Process for the preparation of 1,3-propanediol bis(p-aminobenzoa

Details Process for the preparation of 1,3-propanediol bis(p-aminobenzoa Process for the preparation of 1,3-propanediol bis(p-aminobenzoa

1982-09-29

1984-10-09

Trousof, Natalie

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560112, 562458, C07C10100, C07C 6976, C07C10148

Patent

active

044763182

ABSTRACT:
A process for the preparation of 1,3-propanediol bis(p-aminobenzoate) is described, comprising reacting a p-aminobenzoic acid alkali metal salt with dihalogenated propane in an aprotic polar solvent. In accordance with this process, diesterification proceeds under mild conditions without causing any undesirable side reactions and, therefore the desired 1,3-propanediol bis(p-aminobenzoate) can be obtained in high purity and high yield.

REFERENCES:
patent: 4058550 (1977-11-01), Shepherd et al.
Noller, Chemistry of Organic Compounds, W. B. Saunders Co., 1965, pp. _185-186.
Yoneda et al., J. Chem. Soc. Japan, Ind. Chem. Sec., 69, 641-3 _(1966), as Abstracted p. A38.

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