729-65-7

Upstream product

• 7664-93-9 sulfuric acid 
• 64-19-7 acetic acid 
• 108-67-8 1,3,5-trimethyl-benzene 
• 27129-86-8 1-bromomethyl-3,5-dimethylbenzene 
• 576-83-0 2,4,6-trimethylphenyl bromide 
• 24994-60-3 1-amino-1,2,4-triazole 
• 5779-95-3 3,5-dimethylbenzaldehyde 
• 584-13-4 4-amino-1,2,4-triazole 
• 16340-64-0 (3.5-Dimethyl-phenyl)-(2.4.6-trimethyl-phenyl)-carbinol 
• 10034-85-2 hydrogen iodide 
• 94-36-0 dibenzoyl peroxide 
• 21918-35-4 1,3-bis(3,5-dimethylphenyl)-2-propanone 
• 90-44-8 anthracen-9(10H)-one 
• 529-34-0 3,4-dihydronaphthalene-1(2H)-one 

Downstream Products

• 16340-64-0 (3.5-Dimethyl-phenyl)-(2.4.6-trimethyl-phenyl)-carbinol 

Relevant academic research and scientific papers

Strategy for Selective Csp2-F and Csp2-Csp2Formations from Organoplatinum Complexes

By changing the parameters of fluorination reaction of bisaryl-platinum(II) complexes, each possible competitive pathway of Ar-Ar and Ar-F formation can be selectively controlled. It was discovered that steric hindrance, type of fluorinating reagent, and

Process for producing aromatic compounds

A process produces an aromatic compound by bringing an aromatic compound (B) into contact with molecular oxygen (C) in the presence of a catalyst (A) comprising at least one of (A1) a heteropolyacid and/or a salt thereof, and (A2) a mixture of oxoacids and/or salts thereof containing, as a whole, one of P and Si and at least one selected from V, Mo and W to thereby yield another aromatic compound (G) than the aromatic compound (B). The process can produce, for example, a corresponding aromatic hydroxy compound (G1) by allowing the aromatic compound (B) to react with the molecular oxygen (C) further in the presence of a reducing agent (D).

A Simple Preparation of Diarylmethanes by Oxidative Friedel-Crafts Reaction of Methyl-Substituted Benzenes with o-Chloranil

The reaction of o-chloranil with some methyl-substituted benzenes at elevated temperature was found to be a simple and selective route toward diarylmethanes without need for prior preparation of benzyl halides.

The 1,2,4-triazolyl cation: Thermolytic and photolytic studies

The generation of the 1,2,4-triazolyl cation (1) has been attempted by the thermolysis and photolysis of 1-(1,2,4-triazol-4-yl)-2,4,6-trimethylpyridinium tetrafluoroborate (2) and the thermolysis of 1- and 4-diazonium-1,2,4-triazoles, using mainly mesitylene as the trapping agent. Thermolysis of 2 gave mostly 1,2,4-triazole, together with 3-(1,2,4-triazol-4-yl)-2,4,6-trimethylpyridine, 4-(1,2,4-triazol-4-ylmethyl)-2,6-dimethylpyridine, and 4-(2,4,6-trimethylbenzyl)-2,6-dimethylpyridine. Thermolysis, of each of the diazonium salts in the presence of mesitylene again gave mainly triazole together with very low yields of 1-(1,2,4-triazol-1-yl)-2,4,6-trimethylbenzene and the corresponding -4-yl isomer in about the same ratio. On the other hand, photolysis of 2 in mesitylene gave mainly 1-(1,2,4-triazol-1-yl)-2,4,6-trimethylbenzene. A photoinduced electron transfer from mesitylene to 2 has been observed and preliminary laser flash photolyses of 2 and the corresponding 2,4,6-triphenylpyridinium salt have been carried out. The observed transients are explained as arising from the first excited states of the pyridinium salts rather than from 1. Ab initio MO calculations are reported and indicate that the predicted electronic ground-state of the triazolyl cation is a triplet state of B1 symmetry with five π electrons, which corresponds to a diradical cation (1c). Possible mechanisms for the formation of the various products are proposed.

Carbazolyl nitrenium cations: Generation and reactions

Carbazolyl nitrenium cations were generated during the thermolysis and photolysis of 1-carbazol-9-yl-2,4,6-triphenylpyridinium (Py+-Cz) tetrafluoroborate in 2,2,2-trifluoroethanol- and TFA - mesitylene mixtures. The thermolysis of Py+-Cz in TFA-mesitylene mixture gave 9-mesitylcarbazole in good yield along with carbazole, non-symmetrical mesitylene dimer, 2,4,6-triphenylpyridine, and a small amount of 9-(3,5-dimethylbenzyl)carbazole, whereas the thermolysis in trifluoroethanol - mesitylene mixture gave 9-mesitylcarbazole as the main product along with carbazole and 2,4,6-triphenylpyridine. The product distributions lead to two major conclusions. First, photolysis and thermolysis of Py+-Cz salt produce nitrenium ions that can be in singlet or triplet state dependant on the reaction conditions. Second, the carbazolyl nitrenium ion exhibits singlet state in the ground state.

9,10-Dinaphthylphenanthrenes: Synthesis, Rotational Isomers and Photocyclization to Polycyclic Aromatic Hydrocarbons

9,10-Di(1-naphthyl)phenanthrene (5a) and 9,10-di(2-naphthyl)phenanthrene (5b) have been synthesized.It is shown that 5a and 5b both form two stable rotational (cis/trans) isomers with the naphthalene molecular planes perpendicular to the phenanthrene plane.In the case of 5a the mixture of the two isomers has been separated in a preparative scale and each isomer characterized by e.g., NMR spectroscopy.Photocyclization of 5a leads to benzophenanthroperylene (9) while 5b yields phenanthropentahelicene (14); both hydrocarbons have not been previously described in the literature.The observed selectivities of photocyclization are explained on the basis of the structures and stabilities of the initially formed photoproducts (dihydro structures 15 and 14a).The role of intramolecular non-radiative singlet-singlet energy transfer (naphthalene -> phenanthrene) as competing with photocyclization is discussed in detail. Key words: Dinaphthylphenanthrenes, Rotational Isomers, Photocyclization, Polycyclic Aromatic Hydrocarbons

Nonconventional Friedel-Crafts Chemistry. 1. Reaction of α-Tetralone and Anthrone with Arenes under Friedel-Crafts Conditions

α-Tetralone and anthrone were reacted with arenes in the presence of aluminum chloride to give 6-aryl-1-tetralone and 10-arylanthrone, respectively.The mechanism of these reactions are discussed.

Thermolysis of 1-(N-Acetyl-N-aryl)amino-2,4,6-triphenylpyridinium Tetrafluoroborates: A New Source of Arylnitrenium Ions

Thermolysis of 1-(N-acetyl-N-ary)amino-2,4,6-triphenylpyridinium tetrafluoroborates a new and synthetically useful source of arylnitrenium ions under non-acidic conditions; a p-semidine-type byproduct is obtained from the phenylamino conpound.

Dehydrogenation of 4,5-Disubstituted 9,10-Dihydrophenanthrenes

Dehydrogenation rates of four 4,5-disubstituted 9.10-dihydrophenanthrenes to the corresponding phenanthrenes by 10percent palladium on charcoal for the substituents, H, OCH3, F and CH3, appear to be related to the size of the substituents.The preparation of three new phenanthrenes, viz. 4,5-dichlorophenanthrene, 4,5-difluoro-phenanthrene and 4,5-bis(trifluoromethyl)phenanthrene, is described.Treatment of mesitylene with either 10percent palladium on charcoal at reflux or 2,3-dichloro-5,6-dicyano-1,4-benzoquinone gives an appreciable yield of mesityl(3',5'-xylyl)methane.