85-27-8Relevant articles and documents
Based on H2 SO4 - SiO2 The solid acid catalyst which is suitable for industrial preparation phenylethyl resorcinol (by machine translation)
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Paragraph 0018; 0025-0041, (2019/04/10)
The invention discloses a based on H2 SO4 - SiO2 The solid acid catalyst which is suitable for industrial preparation phenylethyl resorcinol method. In the efficient solid acid H2 SO4 - SiO2 Under the catalytic action, one-step synthesis of the system results in the benzene ethyl resorcinol. The method of the invention can be applied to industrial production, efficient manufacturing phenylethyl resorcinol, to meet the needs of high-efficient catalyst has the advantage of conditions, recycled resorcinol raw materials and organic solvent realize and simplify the process route, environmental protection is reduced pressure. (by machine translation)
Phenylethyl/heteroploid c phenyl phenol preparation method of compound (by machine translation)
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Paragraph 0038; 0039; 0040; 0041; 0042; 0043; 0044, (2016/10/17)
The invention relates to phenyl-based/heteroploid c phenyl phenol preparation method of the compound. The technical scheme is:to styrenic compound and a phenol compound as a raw material, to solid acid H 2 SO 4-SiO 2 as a catalyst, prepared by Friedel-crafts alkylation reaction. The method of the present invention the reaction temperature is low, the reaction speed is fast, the liquid acid to the product solution is caused by the oxidization reaction complex, difficulties and later processing is caused by the problem of serious corrosion of the equipment. (by machine translation)
Hydroarylation of styrenes with electron-rich arenes over acidic ion-exchange resins
Wen, Jingyun,Qi, Haofei,Kong, Xiangjin,Chen, Ligong,Yan, Xilong
, p. 1893 - 1903 (2014/07/07)
A series of acidic cation-exchange resins were used for the hydroarylation of resorcinol with styrene, in which resin D072 exhibited the excellent catalytic performance in this reaction with 99% conversion of styrene and 90% selectivity of 4-(1-phenylethyl)resorcinol. It was applied to the hydroarylation of various electron-rich arenes with styrenes, and the hydroarylated products were quantitatively obtained. This catalyst could be used for four consecutive runs with slight decrease in activity. The hydroarylation of resorcinol with styrene over resin D072 in a fixed bed was completed effectively with 94% selectivity and 99% conversion, and this green continuous process is potentially applicable to large-scale productions.
Microwave-accelerated alkylation of arenes/heteroarenes with benzylic alcohols using antimony(III) chloride as catalyst: Synthesis of O-heterocycles
Shukla, Prashant,Choudhary, Manoj K.,Nayak, Sandip K.
supporting information; experimental part, p. 1585 - 1591 (2011/08/03)
An efficient protocol for alkylation of electron-rich arenes/heteroarenes with benzylic alcohols under microwave irradiation using antimony(III) chloride as catalyst has been developed. The mild reaction conditions, high yields, operational simplicity, and applicability to various substrates render the approach a useful route for the synthesis of diaryl/triarylalkane. In addition, a new route for the conversion of ortho-alkenylated phenols into functionalized O-heterocycles has been accomplished. Georg Thieme Verlag Stuttgart ? New York.
Antioxidant activities of dihydric phenol derivatives for the autoxidation of tetralin
Yamamura,Nishiwaki,Tanigaki,Terauchi,Tomiyama,Nishiyama
, p. 2955 - 2960 (2007/10/03)
The antioxidant activities of dihydric phenols, such as catechol, resorcinol, and hydroquinone, and their twenty-three alkyl and benzyl substituted derivatives were evaluated by means of an oxygen-absorption method at 60°C for determining the oxidation of tetralin. Catechols exhibited a much higher stoichiometric factor (2.0-2.3) compared with those of other compounds. The stoichiometric factors of hydroquinones (0.6-1.1) are almost half those of catechols, and are lower for the resorcinols (0.3-0.6). In addition, the rates of oxidation during the induction period (R(inh)) were 1.1-1.6 x 10-6, 3.0-3.8 x 10-6, and 13.3-18.4 x 10-6 M min-1 for catechols, hydroquinones, and resorcinols, respectively. According to these results, catechols and hydroquinones are efficient antioxidants, and their activities may be dependent on the stability of phenoxyl radicals as oxidation products due to the formation of the quinone structure. Furthermore, the stability of phenoxyl radicals derived from catechols is higher than that of those from hydroquinones. In spite of having two OH substituents, resorcinols behave as monohydric phenols in the reaction with peroxyl radicals.
REACTION OF PYROCATECHOL AND RESORCINOL WITH STYRENE IN THE PRESENCE OF ALUMINUM PHENOLATE
Kozlikovskii, Ya. B.,Koshchii, V. A.,Butov, S. A.
, p. 543 - 546 (2007/10/02)
The alkylation of pyrocatechol and resorcinol with styrene in the presence of aluminum phenolate leads to a mixture of isomeric (α-methylbenzyl)dihydroxybenzenes, in which the ortho-alkylation products as a rule predominate.