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Catalytic Conversion of 2‐Naphthol to 2‐Hydroxy‐1,4=naphthoquinone Under Mild Conditions
Author(s) -
Yan Yan,
Guo HongWei,
Jian WenPing,
Yang KeEr,
Tong ShanLing,
Fang ChiGuang,
Li Qing,
Chang Xin
Publication year - 2004
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20040220519
Subject(s) - chemistry , catalysis , alkali metal , methanol , selectivity , chloride , molecular oxygen , oxygen , 1,4 naphthoquinone , inorganic chemistry , nuclear chemistry , organic chemistry
2‐Hydroxy‐1.4‐naphthaquinone (HNQ) was selectively synthesized from catalytic oxidation of 2‐naphthol by molecular oxygen over tetra(4‐methoxyl‐phenyl)porphyrinate iron(III) chloride (TMOPPFeCl) catalyst in an alkali methanol solution under mild conditions. The influences of solvents, temperature, time, as well as amounts of catalysts and alkali were studied. The quantitative data show that 32.9% of 2‐naphthol (0.093 mol/dm 3 ) was catalytically converted to HNQ with the selectivity of 100% at 323 K for 9 h over TMOPPFeCl catalyst (2.54→10 −4 mol/dm 3 ) in alkali media (30 mL of methanol containing 2.5 mol/dm 3 of NaOH) by flowing molecular oxygen (flowing rate of 45 mL/min).