专利名称：Process for the catalytic oxidation of
aromatic compounds
发明人：HERRMANN, WOLFGANG, ANTON, PROF.
DR.,GALAMBA CORREIA, JOAO
DOMINGOS,FISCHER, RICHARD WALTER,DR.,ADAM, WALDEMAR, PROF. DR.,LIN,JIANHUA, DR.,SAHA-MOELLER, CHANTURANJAN, DR.,SHIMIZU, MASAO, DR.
申请号：EP95100901.8申请日：19950124公开号：EP0665209B1公开日：19981202
摘要：Organic rhenium oxide derivs. of formula R<1>aRebOc (I) can be used ascatalysts in the oxidation of electron-rich aromatic cpds. and their derivs.. In formula (I), a= 1-6; b = 1-4; c = 1-14; a+b+c is such that the 5-7 valency of rhenium is satisfied, and c isnot greater than 3b; R<1> = each 1-10C aliphatic or 6-10C aromatic hydrocarbyl or 7-9Caralkyl, and each R<1> is opt. substd., and in sigma -bonded gps. there is at least one Hatom in position alpha on the C atom. The catalysts can be used for the oxidation of 6-14C aryl cpds., esp, naphthalene, esp. pref. 2-methylnaphthalene, in the presence ofperoxide-contg. cpds., esp. H2O2. In an example, 5 mmol 2-methylnaphthalene weredissolved in glacial ethanoic acid or THF and mixed with the catalyst (0.10 mmol methyltri-oxo-rhenium). H2O2 was then added as the oxidising agent. The reaction mixt. wasstirred at 20 degrees C for 4 hrs.. Work up and analysis showed that conversion was 75%
and the product contained 86% 2-methyl-1,4-naphthoquinone and 14% 2-methyl-5,8-naphthoquinone. When the same process was carried out under the same conditions butin the absence of the catalyst, conversion was 0% and the prod. contained nonaphthoquinones.
申请人：HOECHST AKTIENGESELLSCHAFT,HOECHST AG,HOECHSTAKTIENGESELLSCHAFT
地址：DE
国籍：DE
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