3849-01-2Relevant academic research and scientific papers
Tripodal ligand containing 3, 5-dimethylpyrazole, synthesis method of tripodal ligand and application
-
Paragraph 0012-0015; 0019; 0020; 0021; 0022, (2019/01/14)
The invention relates to a tripodal ligand containing 3, 5-dimethylpyrazole, a synthesis method of the tripodal ligand and an application. The technical scheme includes that anhydrous ZnCl2, paraformaldehyde, concentrated hydrochloric acid and 1, 3, 5-tri
Antioxidant hindered phenol compound 330 method for the synthesis of (by machine translation)
-
Paragraph 0055-0061, (2019/02/02)
The invention provides a synthesis method for a hindered phenolic compound antioxidant 330; the method comprises the following steps: in the presence of a ternary composite catalyst and a diluted hydrochloric acid aqueous solution with specific concentration and amount, a compound represented by the following formula (I) and a compound represented by the following formula (II) are subjected to a reaction in a solvent, and thus the antioxidant 330 is obtained. In the synthesis method, through suitable selection and combination of a catalyst system and a solvent system, the target product is obtained with high yield; and the synthesis method is quite suitable for industrialization large-scale production and application and has a quite broad market prospect.
Insights into the formation of chiral second sphere coordination complexes with aromatic tris amines: combined single crystal X-ray crystallography and molecular modeling analyses
Yu, Hong-Cui,Li, Lei,Gao, Ji,Tong, Jian,Zheng, Wenxu,Cametti, Massimo,Famulari, Antonino,Meille, Stefano Valdo,Guo, Fang,Martí-Rujas, Javier
supporting information, p. 15960 - 15965 (2015/09/15)
A family of isostructural, chiral supramolecular networks have been obtained in the solid state by exploiting second sphere coordination interactions in the self-assembly of achiral tris amines L1 and L2 with tetrahalometallate and halide ions. Quantum-Mechanical (QM) calculations specific for solid phases provided additional insights into the intramolecular and packing interactions which determine chirality, pointing to a direct effect of the methyl groups of the central benzene ring.
Negative-working photosensitive poly(phenylene ether) based on poly(2,6-dimethyl-1,4-phenylene ether), a cross-linker, and a photoacid generator
Mizoguchi, Katsuhisa,Higashihara, Tomoya,Ueda, Mitsuru
experimental part, p. 2832 - 2839 (2011/10/09)
A novel benzyl cation type cross-linker, hex-1,6-ylenebis[oxy(2,4,6- tris(acetyloxymethyl)-3,5-dimethylbenzene)] (HOAD), that suppresses acid-catalyzed self-polycondensation has been developed. Furthermore, a negative-working, photosensitive poly(phenylen
Ion-pair binding: Is binding both binding better?
Roelens, Stefano,Vacca, Alberto,Francesconi, Oscar,Venturi, Chiara
supporting information; scheme or table, p. 8296 - 8302 (2011/03/20)
It is often tempting to explain chemical phenomena on the basis of intuitive principles, but this practice can frequently lead to biased analysis of data and incorrect conclusions. One such intuitive principle is brought into play in the binding of salts
Identification of alkylarene chloromethylation products using gas-chromatographic retention indices
Zenkevich,Makarov
, p. 611 - 619 (2008/03/18)
Gas-chromatographic retention indices on standard nonpolar polydimethylsiloxane stationary phases allow identification of products formed by known organic reactions even without using mass-spectrometric data. The efficiency of this approach was demonstrated by the example of identification of previously uncharacterized chloromethyl derivatives of alkylarenes, including structural isomers of compounds containing several chloromethyl groups, directly in reaction mixtures. Chromatographic analysis of such reaction mixtures allows identification of positional isomers of the starting alkylarenes even when they are present simultaneously. The retention indices were determined for the first time for more than 50 alkyl-(chloromethyl)arenes, by-products of chloromethylation, and chloromethyl derivatives of the simplest alkyl phenyl ketones. Nauka/Interperiodica 2007.
Novel C3V-symmetric tripodal scaffold, triethyl cis,cis,cis-2,5,8- tribenzyltrindane-2,5,8-tricarboxylate, for the construction of artificial receptors.
Choi, Heung-Jin,Park, Yeon Sil,Yun, Seok Hun,Kim, Hong-Seok,Cho, Chan Sik,Ko, Kwangnak,Ahn, Kyo Han
, p. 795 - 798 (2007/10/03)
[reaction: see text] A novel C3V-symmetric scaffold, trindane 7, has been efficiently synthesized from 1,3,5-tris(bromomethyl)-2,4,6-tris(chloromethyl)benzene (1) in six steps with 47% overall yield. The control of all-syn stereochemistry in the tribenzyl
OXIDATION OF HEXAMETHYLBENZENE AND 2,3,4,5,6-PENTAMETHYLBENZYL CATION IN FLUOROSULFONIC ACID
Rudenko, A. P.,Zarubin, M. Ya.,Fedorova, E. M.
, p. 1609 - 1618 (2007/10/02)
The oxidation of hexamethylbenzene in HSO3F-PbO2 takes place with the participation of the 1-H+-1,2,3,4,5,6-hexamethylbenzenonium ion and the intermediate formation of the 2,3,4,5,6-pentamethylbenzyl cation, which is capable of entering into further oxidative transformations leading to substitution of the hydrogen atom in two and three methyl groups.The structure of the final products from the observed transformations were established, and a mechanism is proposed for their formation.
