77880-59-2

Upstream product

• 625-86-5 2,5-dimethylfuran 
• 108-31-6 maleic anhydride 

Downstream Products

• 38108-81-5 3,6-dimethyl-1,2-bis(hydroxymethyl)benzene 
• 85217-64-7 3,6-dimethyl-2-(2,5-dimethylbenzoyl)benzoic acid, pseudo form 
• 106-42-3 para-xylene 
• 944-38-7 3,6-dimethylphthalic acid 
• 38108-82-6 1,2-bis(bromomethyl)-3,6-dimethylbenzene 
• 110568-66-6 2,3-Dihydro-4,7-dimethyl-1H-isoindol-1-on 

Relevant academic research and scientific papers

PH DEPENDENT FLUORESCENCE COMPOUND

PROBLEM TO BE SOLVED: To provide a compound that emits strong fluorescence only in a specific pH region and a precursor compound thereof. SOLUTION: The present invention provides a compound represented by formula (I') (where R is a hydrogen atom or acyl g

IMPROVED PROCESS FOR THE PREPARATION OF A BENZENE COMPOUND

A benzene compound is prepared in a process, which comprises (i) reacting a furan compound of formula (I): wherein R1 and R2 are the same or different and independently selected from the group consisting of hydrogen, alkyl, aralkyl, -CHO, -CH2OR3, -CH(OR4 )(OR5), -COOR6, wherein R3, R4 and R5 are the same or different and are independently selected from the group consisting of hydrogen, alkyl, aryl, alkaryl, aralkyl, alkylcarbonyl and arylcarbonyl, or wherein R4 and R5 together form an alkylene group, and wherein R6 is selected from the group consisting of hydrogen, alkyl and aryl, with an olefin of the formula (II): R7-CH=CH-R8; wherein R7 and R8 are the same or different and are independently selected from the group consisting of hydrogen, sulfonate, -CN, -CHO, and -COOR9, wherein R9 is selected from the group consisting of hydrogen, and an alkyl group, or R7 and R8 together form a –C(O)-O-(O)C- group or a –C(O)-NR10-C(O)- group, wherein R10 represents hydrogen, an aliphatic or an aromatic group, to produce an unsaturated bicyclic ether having an unsaturated carbon-carbon bond; (ii) hydrogenating the unsaturated carbon-carbon bond in the unsaturated bicyclic ether to produce a saturated bicyclic ether; and (iii) dehydrating and aromatizing the saturated bicyclic ether to produce the benzene compound.

Triptycene based luminescent metal-organic gels for chemosensing

We report a novel luminescent Al-based metal-organic gel G1 comprising 1,4,5,8-triptycenetetracarboxylic acid, which exhibits highly sensitive detection towards nitro aromatic compounds particularly picric acid. Furthermore, under identical reaction conditions, using a Co(ii) salt instead, a novel 3D framework material, trip-MOF-1, was isolated and its sensitivity towards picric acid was also evaluated.

On the Diels-Alder approach to solely biomass-derived polyethylene terephthalate (PET): Conversion of 2,5-dimethylfuran and acrolein into p-xylene

Polyethylene terephthalate (PET) is a polymeric material with high global demand. Conventionally, PET is produced from fossil-fuel-based materials. Herein, we explored the feasibility of a sustainable method for PET production by using solely bio-renewable resources. Specifically, 2,5-dimethylfuran (derived from lignocellulosic biomass through 5-(hydroxymethyl)furfural) and acrolein (produced from glycerol, a side product of biodiesel production) were converted into the key intermediate p-xylene (a precursor of terephthalic acid). This synthesis consists of a sequential Diels-Alder reaction, oxidation, dehydration, and decarboxylation. In particular, the pivotal first step, the Diels-Alder reaction, was studied in detail to provide useful kinetic and thermodynamic data. Although it was found that this reaction requires low temperature to proceed efficiently, which presents a limitation on economic feasibility on an industrial scale, the concept was realized and bio-derived p-xylene was obtained in 34 % overall yield over four steps. Making PET as green as grass: Polyethylene terephthalate (PET) can be prepared from solely bio-renewable sources by converting 2,5-dimethylfuran and acrolein into the key intermediate p-xylene (see scheme). This atom-economic route consists of a sequential Diels-Alder reaction, oxidation, dehydrative aromatization and decarboxylation. We examined the feasibility of this process with an emphasis on the Diels-Alder reaction step. Copyright

Synthesis and crystal structures of 1,4,8,11-Tetraalkyl-6,13- diphenylpentacenes

Two 1,4,8,11-tetraalkyl-6,13-diphenylpentacenes were prepared. X-ray analysis revealed that the methyl derivative had a herringbone arrangement with π-overlap, while the propyl derivative had a slipped-parallel structure without π-overlap. The solid-state

High performance, acene-based organic thin film transistors

1,4,8,11-Methyl-substituted 6,13-triethylsilylethynylpentacene shows extended π-π overlap when deposited from solution, yielding organic thin film transistors with high and reproducible hole mobility with negligible hysteresis. The Royal Society of Chemis

Studies on the Chemistry of Isoindoles and Isoindolenines, XXVIII. - 3-Alkoxy-1H-isoindoles, Syntheses and Properties

3-Alkoxy-1H-isoindoles 1 bearing substituents at the carboxylic moiety have been synthesized from substituted 2,3-dihydro-1H-isoindol-1-ones 4 by regiospecific O-alkylation to 5 with trialkyloxonium tetrafluoroborates or methyl trifluoroborates or methyl trifluoromethanesulfonate and subsequent NH deprotonation.According to the spectroscopic properties the semicyclic alkyl imidates 1 exist exclusively in the benzoid 1H structure; the tautomeric o-quinonoid 2H structure 2 cannot be detected by spectroscopic means.

A STABLE DERIVATIVE OF CYCLOOCTATRIENYNE. SYNTHESIS AND CRYSTAL STRUCTURES OF 1,4,7,10-TETRAMETHYL-5,6-DIDEHYDRODIBENZOCYCLOOCTENE AND 1,4,7,10-TETRAMETHYLDIBENZOCYCLOOCTENE

A stable derivative of cyclooctatrienyne (1), namely 1,4,7,10-tetramethyl-5,6-didehydrodibenzocyclooctene (3) has been synthesized and fully characterized.X-Ray crystallographic analyses indicate that 3 adopts a "butterfly" conformation intermediate between those of virtually planar 5,6-didehydrodibenzocyclooctene (2) and tub-shaped 1,4,7,10-tetramethyldibenzocyclooctene (16).The methyl substituents effectively shield the otherwise rather exposed strained triple bond of 3 and kinetically stabilize it against dimerization and/or oxidation.

The molecular conformations of 8,11-dimethyl-5,6-benzo-2-oxo-1,3,2-dioxathiepin and 4,4-dimethyl-5,6-benzo-2-oxo-1,3,2-dioxathiepin

The conformational properties of 8,11-dimethyl-5,6-benzo-2-oxo-1,3,2-dioxathiepin (5) and of 4,4-dimethyl-5,6-benzo-2-oxo-1,3,2-dioxathiepin (6) have been investigated using 1H and 13C dnmr as well as ir spectroscopy.Analysis of low temperature nmr spectra (down to -148 grad C) and of S=O stretching vibrations in room temperature ir spectra indicates that the most stable conformations detected for solutions in CHF2Cl/CD2Cl2 (80:20) are TB (83percent) and C-a (17percent) for 5 and only the TB 7 for 6.Substment effects of methyl groups at the peri and the benzylic positions on the conformational properties of the seven-membered sulfites are discussed.