Patent · US Expired

Preparation of 2-t-butyl-4-alkoxy- and 4-hydroxyphenols

US4465871A · kind A · utility

36Cited by
4References
17Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 8, 1983
Grant dateAug 14, 1984
Priority date—
Expiry dateAug 8, 2003

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C41/32
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

Tertiary alkyl phenyl ethers may be induced to undergo thermal rearrangement on an alumina catalyst to afford the isomeric ortho-t-alkylphenol. Such rearrangement generally occurs under milder conditions than does the alkylation of a phenol with an olefin using the same alumina as an alkylating catalyst. The rearrangement remains regioselective even when the phenyl ring bears an alkoxy group, hence affords a good preparative route to such materials as 2-t-butyl-4-methoxyphenol.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.