20282-30-8

Usage

Uses

Used in Heat Transfer Fluids:
3-ISOPROPYLBIPHENYL is used as a heat transfer fluid in various industrial applications due to its high thermal stability and low viscosity, which allows for efficient heat transfer and energy conservation.
Used in Liquid Crystal Production:
3-ISOPROPYLBIPHENYL is used as a key ingredient in the production of liquid crystals, which are utilized in electronic devices and display technologies. Its unique molecular structure contributes to the formation of liquid crystal phases, enabling advanced display and electronic functionalities.
Used in Chemical and Industrial Processes:
3-ISOPROPYLBIPHENYL is used as a valuable component in various chemical and industrial processes due to its high chemical stability and insolubility in water. Its properties make it suitable for use in a wide range of applications, including as a solvent, a reaction medium, or a component in the synthesis of other compounds.

Upstream product

• 98-82-8 Isopropylbenzene 
• 2396-01-2 phenyl radical 
• 53618-27-2 3-(prop-1-en-2-yl)-1,1'-biphenyl 
• 122444-76-2 5-Methyl-2-phenyl-1,3,4-hexatriene 
• 74-86-2 acetylene 
• 75-26-3 isopropyl bromide 
• 92-52-4 biphenyl 
• 187737-37-7 propene 
• 98-80-6 phenylboronic acid 
• 80841-09-4 meta-isopropylphenol trifluoromethanesulfonate 
• 618-45-1 3-isopropylhydroxybenzene 
• 66003-76-7 Diphenyliodonium triflate 
• 7116-95-2 4-isopropylbiphenyl 
• 17333-73-2 phenylium 

Relevant academic research and scientific papers

Transition-Metal-Free C-C, C-O, and C-N Cross-Couplings Enabled by Light

Transition-metal-catalyzed cross-couplings to construct C-C, C-O, and C-N bonds have revolutionized chemical science. Despite great achievements, these metal catalysts also raise certain issues including their high cost, requirement of specialized ligands, sensitivity to air and moisture, and so-called "transition-metal-residue issue". Complementary strategy, which does not rely on the well-established oxidative addition, transmetalation, and reductive elimination mechanistic paradigm, would potentially eliminate all of these metal-related issues. Herein, we show that aryl triflates can be coupled with potassium aryl trifluoroborates, aliphatic alcohols, and nitriles without the assistance of metal catalysts empowered by photoenergy. Control experiments reveal that among all common aryl electrophiles only aryl triflates are competent in these couplings whereas aryl iodides and bromides cannot serve as the coupling partners. DFT calculation reveals that once converted to the aryl radical cation, aryl triflate would be more favorable to ipso substitution. Fluorescence spectroscopy and cyclic voltammetry investigations suggest that the interaction between excited acetone and aryl triflate is essential to these couplings. The results in this report are anticipated to provide new opportunities to perform cross-couplings.

The isopropylation of biphenyl over transition metal substituted aluminophosphates: MAPO-5 (M: Co and Ni)

The isopropylation of biphenyl (BP) was examined over transition metal substituted aluminophosphates (MAPO-5; M: Co and Ni) with 12-membered (12-MR) oxygen ring pore-entrances of AFI topology. The MAPO-5 samples were synthesized by dry gel conversion method using trimethylamine as a structure directing agent, and their properties were characterized by XRD, XPS, SEM, N2 adsorption, NH3-TPD, pyridine adsorption, and o-xylene uptake. They are clear crystals without impurity phases and agglomerates, and found small amounts of Br?nsted acid sites which are expecting active for acid catalysis. The isopropylation of BP over both of Co(5)APO-5 and Ni(5)APO-5 at 250 °C gave the high selectivities for 4,4′-DIPB: 65-75%. 4-IPBP is almost exclusive precursor of 4,4′- and 3,4′-DIPB. 3-IPBP was not significantly concerned even though 3-IPBP was predominant among IPBP isomers at the late stages: the MAPO-5 channels allow preferential access of 4-IPBP, and prevent the access of 3-IPBP due to reactant selectivity mechanism. The selective formation of 4,4′-DIPB occurred by preferential exclusion of bulkier 3,4′-DIPB and other isomers through the steric interaction of transition states with the channels by the restricted transition state selectivity mechanism. MAPO-5 (M: Co and Ni) has the same level of the selectivities for 4,4′-DIPB to SSZ-24 and other MAPO-5 (M: Si, Mg, and Zn), and these selectivities were originated by the AFI channels. The selectivities for 4,4′-DIPB were kept 65-75% at low and moderate temperatures over MAPO-5 (M: Co and Ni); however, they were decreased by the isomerization to stable 3,4′-DIPB with the increase in temperature.

Palladium-catalyzed arylation of simple arenes with iodonium salts

The development of an arylation protocol for simple arenes with diaryliodonium salts using the Herrmann-Beller palladacycle catalyst is reported. The reaction takes simple aromatic feedstocks and creates valuable biaryls for use in all sectors of the chem

Shape-selective alkylation of biphenyl with propylene using zeolite and amorphous silica-alumina catalysts

The influence of zeolite structure for the alkylation of biphenyl with propylene was studied over various zeolites such as HY, HZSM-5, and dealuminated mordenite (DMOR), as well as amorphous SiO2/Al2O 3, in a stirred tank reactor. Biphenyl conversion was found to increase with reaction time for HZSM-5 and DMOR zeolites and reach a leveling off in 4 h, whereas for HY and amorphous SiO2/Al2O 3 a leveling off was reached within an hour. DMOR displayed the highest selectivity for 4,4′-diisopropylbiphenyl (4,4′-DIPB) even at temperatures as high as 300 °C, whereas for HY, HZSM-5 and amorphous SiO2/Al2O3 selectivities fell in the range of 10-35%; they were significantly lower than observed for DMOR. These differences in selectivity might be due to the structure and pore channels of the zeolites. DMOR was found to be an active catalyst, the selectivity for 4-isopropylbiphenyl (4-IPB) and (4,4′-DIPB) was high among isopropylbiphenyl (IPB) and diisopropylbiphenyl (DIPB) isomers, respectively, indicating DMOR possesses shape-selectivity. The selectivity of 4,4′-DIPB increased with time, while the corresponding selectivity of 4-IPB decreased for DMOR catalyst. Alkylation of biphenyl with propylene occurred with predominant formation of 4-IPB in the first step. 4-IPB is only a source in the second step of alkylation of biphenyl with propylene for the formation of 4,4′-DIPB, while 3-IPB does not participate in the formation of DIPB isomers.

Isopropylation of biphenyl over ZSM-12 zeolites

ZSM-12 zeolites, ZSM-12L and ZSM-12S, with MTW topology were synthesized by using methyltriethylammonium bromide (MTEABr) and tetraethylammnoium bromide (TEABr) as structure directing agents (SDA), respectively, for the isopropylation of biphenyl (BP) usi

Continuous Process for preparing 4,4'-diisopropylbiphenyl

A continuous flow process has been discovered for the highly selective isopropylation of biphenyl to 4,4'-diisopropylbiphenyl. Thus biphenyl and propene in decalin are passed through a solid catalyst bed contained in a flow reactor at moderate temperature (220°C) and pressure (10-30 atm) together with a continuous stream of nitrogen. The catalyst is an acidic zeolite catalyst having a molar ratio of SiO2 to Al2O3 in a range between about 20 to 1 and about 500 to 1. Optimal catalytic performance is achieved when 35% or more of the active sites in the catalyst have an activation energy of ammonia desorption in a range between about 145 kJ/mol and about 170 kJ/mol. Additional enhancements of catalyst performance can be achieved by pretreating the acidic zeolite catalyst with a volatile basic agent prior to the alkylation reaction.

Synthesis of 4-alkyl-4-(4-methoxyphenyl)cyclohex-2-en-1-ones and 5-alkyl-5-phenyl-1,3-cyclohexadienes from bis(tricarbonylchromium)-coordinated biphenyls

(η6:η6-Biphenyl)[Cr(CO)3] 2 and (η6η64,4'-dimethoxybiphenyl) [Cr(CO)3]2 were chemically reduced with lithium anthracenide or lithium naphthalenide in THF to generate s

Equilibria of isomeric transformations of alkylbiphenyls

Equilibria of mutual transformations of mono-, di-, and tri-alkylbiphenyls (ABP) were investigated in the liquid phase at 308 to 423 K.On the basis of experimental equilibrium constants, values of ΔrHm0/(kJ * mol-1) and ΔrSm0/(J * K-1 * mol-1) were calculated.Below are given correspondingly: reaction, compound and values for Et-BP (I), i-Pr-BP (II), and t-Bu-BP (III): 4-ABP = 3-ABP, I, 0.23, 5.76; II, (0.45+/-0.4), (5.72+/-1.13); III, (0.48+/-0.53), (4.83+/-0.53); 2-ABP = 4-ABP, I, -3,3, -5.76; II, -12.6, -5.76; III, -15.4, -5.76; 3,5-di-ABP = 3,3'-di-ABP, I, -0.1, 5.76; II, (0+/-0.60), (5.98+/-1.65); III, (-1.34+/-0.67), (4.48+/-1.87); 3,3'-di-ABP = 3,4'-di-ABP, I, -0.37, 0; II, (-0.64+/-1.6), (-0.48+/-4.6); III, (-0.90+/-0.39), (0+/-1.08); 4,4'-di-ABP = 4,3'-di-ABP, I, 0.24, 11.53; II, (0.47+/-0.06), (11.88+/-0.15); III, (0.35+/-2.2), (11.37+/-6.23).The joint processing of the above results gave the values of ΔrHm0/(kJ * mol-1) and ΔrSm0/(J * K-1 * mol-1) for meta-to-para-transformations of ABP: I, 0.33, 0; II, (0.59+/-0.76), (0.31+/-2.12); III, (0.71+/-1.34), (-0.37+/-3.78).