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A Family of Routes to Substituted Phenols, Including Meta-Substituted Phenols
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- Author(s) / Creator(s)
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A new family of routes to substituted phenols has been developed. 2-Bromo-3-
methoxycyclohex-2-en-1-ones are readily deprotonated at C-6 and the resulting anions react
smoothly with a variety of electrophiles; treatment with DBU in PhMe at room temperature then
results in efficient aromatization to benzene derivatives of regiochemically defined substitution
pattern. This sequence affords phenolic azides (ArN3), sulfides (ArSR, ArSAr'), selenides
(ArSePh), alcohols [ArCH(OH)R], amino derivatives [ArCH(NHSO2Ar')R), and 1,2-
benzenediols. A complementary set of substitution patterns is obtained by DIBAL-H reduction
or reaction with a Grignard reagent before aromatization; the latter process gives compounds in
which the newly-introduced substituent is meta to the phenolic hydroxyl. -
- Date created
- 2015-01-01
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- Subjects / Keywords
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- Type of Item
- Article (Draft / Submitted)