Process for making 3-(3,5-dialkyl-4-hydroxyphenyl)propionate est

Details Process for making 3-(3,5-dialkyl-4-hydroxyphenyl)propionate est Process for making 3-(3,5-dialkyl-4-hydroxyphenyl)propionate est

1979-05-30

1981-04-21

Trousof, Natalie

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

Organic compounds

Carboxylic acid esters

C07C 69612

Patent

active

042634466

ABSTRACT:
An improved method for making 3-(3,5-dialkyl-4-hydroxyphenyl)propionates of hydroxyalkyloxamides involved heating the hydroxyalkyloxamide with a lower alkyl ester of 3-(3,5-dialkyl-4-hydroxyphenyl)propionic acid in the presence of an alkanestannoic acid at a temperature of 150.degree. to 230.degree. C., the lower boiling alcohol being removed by distillation.

REFERENCES:
patent: 4085132 (1978-04-01), Park et al.
patent: 4145556 (1979-03-01), Hirsch et al.
patent: 4153597 (1979-05-01), Wheeler et al.
M & T Chemicals Inc., Rahway, New Jersey, product description sheet Nos. 342 and 346.
Nagai et al., "Chem. Absts.", 87, 53825(a), 1977.
Hamada et al., "Chem. Absts.", 85, 78684(a), 1976.
Koseki et al., "Chem. Absts.", 87, 118421(n) 1977.

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