Transesterification process for making allyl esters of aromatic

Details Transesterification process for making allyl esters of aromatic Transesterification process for making allyl esters of aromatic

1996-11-27

1998-01-20

Barts, Samuel

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

Organic compounds

Carboxylic acid esters

560 99, C07C 6976

Patent

active

057103160

ABSTRACT:
A transesterification process for making allyl esters of aromatic carboxylic acids from the corresponding alkyl esters and allylic alcohols is disclosed. The alkyl ester/allylic alcohol mixture is dried by distillation to less than about 200 ppm water before heating it in the presence of the transesterification catalyst. The resulting allyl ester is obtained rapidly in high yield with a minimal level of catalyst. In addition, product isolation is simple, and color is exceptionally low. The process is particularly valuable for making diallyl phthalate from dialkyl esters of phthalic acid.

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