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Condensations of N-arylhydroxylamines for the preparation of 5,5′-di-tert-butyl-2,2′-dihydroxydiphenylamine

✍ Scribed by John D Spence; Ashley E Raymond; Dianne E Norton

Book ID: 104252781
Publisher: Elsevier Science
Year: 2003
Tongue: French
Weight: 85 KB
Volume: 44
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(02)02699-0

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✦ Synopsis

Acid-promoted condensation of 4-tert-butyl-2-hydroxylaminoanisole with p-tert-butylphenol resulted in the formation of 5,5%-di-tert-butyl-2,2%-dihydroxydiphenylamine upon demethylation with BBr 3 . Protection of the acidic phenol unit was required to isolate the acid labile N-arylhydroxylamine intermediate.

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