Method for producing hydroxyphenylpropionic acid ester

Details Method for producing hydroxyphenylpropionic acid ester Method for producing hydroxyphenylpropionic acid ester

1986-05-29

1988-06-28

Chan, Nicky

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D31900, C07D49310

Patent

active

047540451

ABSTRACT:
Method for producing 3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy]-1,1-dime thylethyl}-2,4,8,10-tetraoxaspiro[5.5]undecane by ester exchange of a 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)-propionic acid ester with 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5.5]-undecane at a temperature of 170.degree.-250.degree. C. using a calcium compound as a catalyst in an amount of 0.05-1.5 moles per mole of the 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5.5]-undecane.

REFERENCES:
patent: 4576734 (1986-03-01), Ishii et al.
Ishii et al., Chem. Abstract, 104, 69709w (1986).

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