18779-88-9

Basic information

• Product Name: 1,2,4-trimethyl-5-[2-(2,4,5-trimethylphenyl)ethyl]benzene
• CAS NO: 18779-88-9
• Molecular Formula: C₂₀H₂₆
• Molecular Weight: 266.426
• Mol File: 18779-88-9.mol
• Article Data: 7

Chemical Properties

• Boiling Point: 374.2°Cat760mmHg
• Flash Point: 195.5°C
• Density: 0.949g/cm³
• CAS DataBase Reference: 1,2,4-trimethyl-5-[2-(2,4,5-trimethylphenyl)ethyl]benzene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2,4-trimethyl-5-[2-(2,4,5-trimethylphenyl)ethyl]benzene(18779-88-9)
• EPA Substance Registry System: 1,2,4-trimethyl-5-[2-(2,4,5-trimethylphenyl)ethyl]benzene(18779-88-9)

Safety Data

• Hazardous Substances Data: 18779-88-9(Hazardous Substances Data)

Usage

Chemical class

Aromatic hydrocarbon

Physical state

Colorless liquid

Odor

Strong, sweet

Solubility

Insoluble in water, soluble in organic solvents

Uses

a. Fragrance ingredient in perfumes, colognes, and other scented products
b. Potential applications in pharmaceutical and chemical industries

Safety

Handle with caution and follow proper safety protocols due to potential hazards if not used properly.

Upstream product

• 95-93-2 1,2,4,5-tetramethylbenzene 
• 67-64-1 acetone 
• 100-47-0 benzonitrile 
• 3167-01-9 (2,4,5-trimethyl-phenyl)-acetic acid 
• 2362-16-5 1,2-bis(chloromethyl)-4,5-dimethylbenzene 
• 613-46-7 2-naphthalenecarbonitrile 
• 94678-94-1 1,2-Bis-<3,4-dimethyl-6-jodmethyl-phenyl-(1)>-ethan 
• 60070-06-6 1,2-bis(bromomethyl)-4,5-dimethylbenzene 
• 95-63-6 1,2,4-Trimethylbenzene 
• 107-06-2 1,2-dichloro-ethane 
• 101797-36-8 6,7-Dimethyl-tetralin-2-spiro-(3'-methyl-4',6'-dimethylen-2'-cyclohexen) 
• 91009-97-1 1,2,4,5-Tetrakis-(iodmethyl)-cyclohexan 
• 60070-05-5 1,2-bis(hydroxymethyl)-4,5-dimethylbenzene 
• 17649-59-1 dimethyl 4,5-dimethylphthalate 

Downstream Products

• 89-32-7 Pyromellitic dianhydride 

Relevant articles and documents

Preparation method for pyromellitic dianhydride

The invention discloses a preparation method for pyromellitic dianhydride. The preparation method comprises the following steps: (1) reacting metachlorotoluene and dichloroethane for 0.5 to 5 hours inan organic solvent under the catalytic action of aluminium trichloride or ferric chloride, generating 2,2'4,4'5,5'-hexamethyldiphenyl ethane, hydrolysing, and removing the solvent to obtain a crude product of the 2,2'4,4'5,5'-hexamethyldiphenyl ethane; and (2) heating and gasifying the crude product of the 2,2'4,4'5,5'-hexamethyldiphenyl ethane, oxidizing through air at the reaction temperature of 350 to 500 DEG C under the action of a catalyst, and collecting the product to obtain the pyromellitic dianhydride. According to the preparation method for the pyromellitic dianhydride disclosed bythe invention, the product selectivity can reach over 90 percent, the yield is good, the cost is low, and industrial production can be realized.

Reductive Coupling by Chromium(0) - (Bibenzyl)- and (Stilbene)tricarbonylchromium(0) Complexes by a One-Pot Reaction from Benzylic Halides

Reaction of Cr(CO)3(NH3)3 with benzylic mono-, di-, and trihalides leads to the formation of 1,2-diarylethanes, -ethenes, and diphenylethyne in satisfactory yields.Di(halomethyl)benzene derivatives yield product mixtures containing both reduction products and coupling products.With a higher excess in chromium(0), under otherwise unchanged reaction conditions, the corresponding (arene)tricarbonylchromium(0) complexes of the coupling products are formed in a one-pot reaction from the benzylic halides.

PHOTOCHEMICAL REACTION OF 1- AND 2-NAPHTHALENECARBONITRILE WITH SOME METHYLBENZENES

1- and 2-Naphthalenecarbonitriles (1- and 2-NN) photochemically react with 1,2,4,5-tetramethylbenzene (4) (but not with lower homologues).The products are (1,1'-(1,2-ethanediyl)bis-(2,4,5-trimethylbenzene) (5) and 3-hydroxy-1-naphthalenecarbonitrile with