1817-68-1Relevant articles and documents
Catalytic synthesis of 4-methyl-2-(α-methyl benzyl) phenol over fe-al-mcm-41 for extraction-separation rubidium from brine
Feng, Zhenhua,An, Lianying,Huang, Zhenggen,Zhao, Xianyin,Wang, Bengao
, p. 141 - 147 (2021/02/05)
A new extractant 4-methyl-2-(α-methyl benzyl) phenol had been synthesized with styrene and p-cresol through the Friedel-Crafts alkylation reaction. Fe-Al-MCM-41 which was used as molecular sieves catalyst for the synthesis of the extractant was prepared by hydrothermal synthesis method and then characterized by FT-IR, XRD, NH3-TPD and N2 adsorption isotherm. The catalytic synthesis conditions of 4-methyl-2-(α-methyl benzyl) phenol such as reaction time, temperature and catalyst dosage were investigated. The conversion of styrene was about 81.2%, the target product yield and selectivity can reach 74.6% and 95.7% respectively. The structure of the 4-methyl-2-(α-methyl benzyl) phenol was confirmed by 1H-NMR. At the same time, 4-methyl-2-(α-methyl benzyl) phenol was used as extractant to separate rubidium from brine of which the rate of potassium to rubidium is 10:1 (CK+=10.0g/L, CRb+=1.0g/L). The experiment results show that the extractant has a great extraction performance to rubidium, the extraction yields of rubidium and potassium can reach 81.1% and 9.4% respectively. The separation factor of Rb+/K+ can reach up to 41.4.
REACTION OF o-, m-, AND p-CRESOL WITH STYRENE IN THE PRESENCE OF ALUMINIUM CRESOLATES
Kozlikovskii, Ya. B.,Chernyaev, B. V.,Litvin, A. L.,Kofanova, A. V.
, p. 1325 - 1330 (2007/10/02)
The alkylation of o-, m-, and p-cresol by styrene in the presence of aluminium cresolates gives a mixture of isomeric (α-methylbenzyl)cresols, whose composition is predominated by the ortho-alkylation products. 2,6-Di(α-methylbenzyl)-4-methylphenol has been separated into a racemate and the meso form, whose ratio varies from 1:1 (130 deg C) to 2:1 (210 deg C).The erythro and threo forms of 2,6-di(α-methylbenzyl)-3-methylphenol have been recovered in ratios equal to 1:1.4 (130 deg C) and 1:1.29 (150 deg C), which point out the stereospecifity of the alkylation reaction.