Process for the preparation of hydroxyphenylcarboxylates
Patent
US-5481023-A
Inventor
KLEINER CHRISTOPH (CH)
EVANS SAMUEL (CH)
SCHMITT RALF (DE)
Assignee
CIBA GEIGY CORP (US)
Country
United States
Dates
- Priority:1991/10/15
- Grant:1996/01/02
Description
This web page summarizes information in PubChem about patent US-5481023-A. This includes chemicals mentioned, as reported by PubChem contributors, as well as other content, such as title, abstract, and International Patent Classification (IPC) codes. To read more about how this page was constructed, please visit the PubChem patents help page.
There is disclosed a process for the preparation of compounds of formula I ##STR1## wherein R 1 and R 2 are each independently of the other C 1 --C 8 alkyl, m is 0, 1, 2 or 3, n is 1 or 2, and A, if n 32 1, is OR 3 , and R 3 is C 4 -C 20 alkyl or C 5 -C 12 cycloalkyl, or A, if n=2, has the formula --O--C x H 2x --O-- or --O--(CH 2 CH 2 O) a CH 2 CH 2 O--, x is a number from 2 to 8 and a is a number from 1 to 12, by reacting a compound of formula II ##STR2## with a compound of formula III ##STR3## the reaction being carded out in the presence of an aluminium trialcoholate or triphenolate as catalyst.
1991/10/15
1993/09/30
1996/01/02
1996/01/02
KLEINER CHRISTOPH (CH)
EVANS SAMUEL (CH)
SCHMITT RALF (DE)
CIBA GEIGY CORP (US)
United States
C07C69/88 (inventive)
C07C67/02 (inventive, first)
C07C69/612 (inventive)
C07B61/00 (inventive)
C07C69/732 (inventive)
C07C69/84 (inventive)
C07C67/03 (inventive)
C07C67/03 (inventive, first)
C07C39/08 (inventive, first)
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