19789-35-6

Basic information

• Product Name: o-tert-butylstyrene
• Synonyms: o-tert-butylstyrene;1-(1,1-Dimethylethyl)-2-ethenylbenzene;2-tert-Butylstyrene;Einecs 243-316-6
• CAS NO: 19789-35-6
• Molecular Formula: C₁₂H₁₆
• Molecular Weight: 160.25544
• EINECS: 243-316-6
• Mol File: 19789-35-6.mol

Chemical Properties

• Boiling Point: 210.9°Cat760mmHg
• Flash Point: 74.2°C
• Appearance: /
• Density: 0.88g/cm³
• Vapor Pressure: 0.273mmHg at 25°C
• Refractive Index: 1.522
• CAS DataBase Reference: o-tert-butylstyrene(CAS DataBase Reference)
• NIST Chemistry Reference: o-tert-butylstyrene(19789-35-6)
• EPA Substance Registry System: o-tert-butylstyrene(19789-35-6)

Safety Data

• Hazardous Substances Data: 19789-35-6(Hazardous Substances Data)

Usage

InChI:InChI=1/C12H16/c1-5-10-8-6-7-9-11(10)12(2,3)4/h5-9H,1H2,2-4H3

Upstream product

• 74-85-1 ethene 
• 35293-35-7 2-methyl-2-phenyl-1-propylmagnesium chloride 
• 16358-79-5 2-tert-butylbenzaldehyde 
• 2065-66-9 methyl-triphenylphosphonium iodide 
• 253185-03-4 tert-butylbenzene 
• 62171-59-9 1-(tert-butyl)-2-iodobenzene 

Downstream Products

• 1041002-76-9 (R)-1-(2-tert-butylphenyl)ethane-1,2-diol 
• 132871-86-4 1-(tert-butyl)-2-ethylbenzene 

Relevant articles and documents

Diastereoselective remote C-H activation by hydroboration

Hydroboration of tetrasubstituted or trisubstituted alkenes with BH 3 and subsequent thermolysis allows remote diastereoselective C-H activation of neighboring aryl rings. Tetrasubstituted and trisubstituted 1,1-diphenyl-ethylene derivatives undergo a highly stereoselective 1,2-rearrangement followed by remote C-H activation to lead, after oxidative workup, to a diol in which the relative stereochemistry of two stereocenters has been controlled. The mechanism of this remote activation has been studied and extended to related molecules that undergo this stereoselective C-H activation, namely alkenylbiphenyl systems or alkenes with only one phenyl ring, such as alkenylbenzenes. or bicyclic systems. We have shown that this reaction allows diastereoselective synthesis of molecules with up to three contiguous chiral centers.

Novel metallocene catalyst and process for preparing styrenic polymer using the same

A metallocene catalyst for styrene polymerization is represented by one selected from formulas (A) and (B): CpMR1R2R3??(A) CpMR1R4R2??(B) wherein M is selected from the group consisting of titanium, zirconium and hafnium; R1 and R4 are each independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 5 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an acyloxy group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an alkylaryl group having 7 to 20 carbon atoms, an arylalkyl group having 7 to 20 carbon atoms or an alkylthio group; R2 and R3 are each independently a siloxy group represented by the following formula (C): 1wherein r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12, r13, r14 and r15 are each independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an aryl group having 6 to 20 carbon atoms, an alkylaryl group having 7 to 20 carbon atoms or an arylalkyl group having 7 to 20 carbon atoms; and Cp is one selected from the group consisting of a cyclopentadienyl group, an indenyl group, a fluorenyl group and a derivative thereof, each forming an η5 bond with the transition metal M.

Metallocene catalyst and preparing process of styrenic polymer using the same

Disclosed herein is a metallocene catalyst for use in the preparation of a styrenic polymer or copolymer. This metallocene catalyst contains a siloxy group introduced into an ancillary ligand bonded to a central metal of a transition metal compound. The introduction of the siloxy group is achieved by a reaction of the transition metal compound with a hydroxy functional group-containing silicone compound. The use of the metallocene catalyst of the present invention provides a styrenic polymer or copolymer having an excellent stereoregularity, a high melting point, and improved molecular weight and molecular weight distribution, even when it is used in combination with a small amount of a cocatalyst.

Process for preparing tert-butylstyrene

TERT-Butylstyrene is prepared by a one-step reaction of tert-butylbenzene, ethylene and oxygen in the presence of a catalyst prepared by treating metallic palladium or fatty acid salts thereof with pyridine. The yield is increased by using together therewith a promoter prepared by treating one or more metals or oxides or fatty acid salts thereof, the metals being selected from the group consisting of copper, nickel, manganese, uranium and thallium. The reaction is carried out at a temperature between 50° to 300°C under a pressure of up to 100 kg/cm2.