ISSN:
1572-8854
Keywords:
2-tert-Butyl-4-methoxyphenol
;
antioxidant
;
autoxidation
;
tricyclo[5.2.2.02, 6]undecane derivative
;
oxocyclopentenylidenecyclopentenedione derivative
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract In order to confirm the structures of the autoxidation products of 2-tert-butyl-4-methoxyphenol (BHA), X-ray crystallographic analyses have been undertaken. One of the products was converted to a dibenzoate, which was subjected to the analysis to establish the structure as the O 6,O 7-dibenzoyl derivative of (1R*,2R*,6S*,7S*,9R*)-4,9-di-tert-butyl-6,7-dihydroxytricyclo[5.2.2.02, 6]undec-4-ene-3,8,10-trione. Crystallographic analysis of the major isomer of the two isomeric products gave its structure as (E)-4-tert-butyl-2-(3-tert-butyl-4-oxocyclopent-2-en-1-ylidene)cyclopent-4-ene-1,3-dione, which also established the structure of the minor isomer as the corresponding (Z)-isomer.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1009503600418
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