77635-21-3Relevant academic research and scientific papers
High-efficiency preparation method of long-chain alkyl salicylaldehyde (by machine translation)
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Paragraph 0032-0035; 0036-0038, (2019/10/01)
The invention provides a preparation method: a long-chain alkyl salicylaldehyde. The long-chain alkyl phenol and paraformaldehyde react under the conditions of organic amine, magnesium salt, solvent and temperature and the like, and corresponding long-chain alkyl salicylaldehyde. The conversion rate of the 96% method is equal to or higher, the product separation is convenient, the used magnesium salt is usually industrial waste, the cost is low, and the method is convenient to recycle and recycle. The obtained compound is an organic intermediate with important application value, and plays an important application in the field of non-ferrous metal smelting and surface active agents and the like. (by machine translation)
Synthesis and antimicrobial screening of some novel chalcones and flavanones substituted with higher alkyl chains
Mallavadhani, Uppuluri Venkata,Sahoo, Laxmidhar,Kumar, Koochana Pranay,Murty, Upadyayula Suryanarayana
, p. 2900 - 2908 (2014/05/06)
As a part of our program to generate some novel flavonoid frameworks substituted with higher alkyl groups as possible antimicrobial agents, we have in total synthesized twelve novel chalcones (11-16) and their corresponding flavanones (17-22) substituted with either nonyl or dodecyl chains in ring B in very good to excellent yields. The synthesized compounds have been screened for their antimicrobial potential against six bacterial and four fungal strains. The tested compounds, in general, showed significant antibacterial and comparable antifungal activities. While the chalcone (16) with a dodecyl chain showed highly promising antibacterial activity against almost all the organisms tested, the chalcone (13) with nonyl chain showed promising antifungal activity against Candida rugosa and Aspergillus niger strains.
Porous molecular networks formed by the self-assembly of positively-charged trigonal building blocks at the liquid/solid interfaces
Tahara, Kazukuni,Abraham, Maria L.,Igawa, Kosuke,Katayama, Keisuke,Oppel, Iris M.,Tobe, Yoshito
supporting information, p. 7683 - 7685 (2014/07/08)
Tris-(2-hydroxybenzylidene)triaminoguanidinium salts having six alkyl chains with proper spacing served as new molecular building blocks for the formation of porous honeycomb networks by van der Waals interaction between interdigitated alkyl chains at the
Syntheses and properties of graphyne fragments: Trigonally expanded dehydrobenzo[12]annulenes
Tahara, Kazukuni,Yamamoto, Yuki,Gross, Dustin E.,Kozuma, Hiroyoshi,Arikuma, Yoko,Ohta, Koji,Koizumi, Yoshiko,Gao, Yuan,Shimizu, Yo,Seki, Shu,Kamada, Kenji,Moore, Jeffrey S.,Tobe, Yoshito
, p. 11251 - 11260 (2013/09/02)
We present herein the synthesis and properties of the largest hitherto unknown graphyne fragment, namely trigonally expanded tetrakis(dehydrobenzo[12] annulene)s (tetrakis-DBAs). Intramolecular three-fold alkyne metathesis reactions of hexakis(arylethynyl)DBAs 9 a and 9 b using Fuerstner's Mo catalyst furnished tetrakis-DBAs 8 a and 8 b substituted with tert-butyl or branched alkyl ester groups in moderate and fair yields, respectively, demonstrating that the metathesis reaction of this protocol is a powerful tool for the construction of graphyne fragment backbones. For comparison, hexakis(arylethynyl)DBAs 9 c-g have also been prepared. The one-photon absorption spectrum of tetrakis-DBA 8 a bearing tert-butyl groups revealed a remarkable bathochromic shift of the absorption cut-off (λ cutoff) compared with those of previously reported graphyne fragments due to extended π-conjugation. Moreover, in the two-photon absorption spectrum, 8 a showed a large cross-section for a pure hydrocarbon because of the planar para-phenylene-ethynylene conjugation pathways. Hexakis(arylethynyl)- DBAs 9 c-e and 9 g and tetrakis-DBA 8 b bearing electron-withdrawing groups aggregated in chloroform solutions. Comparison between the free energies of 9 e and 8 b bearing the same substituents revealed the more favorable association of the latter due to stronger π-π interactions between the extended π-cores. Polarized optical microscopy observations, DSC, and XRD measurements showed that 8 b and 9 e with branched alkyl ester groups displayed columnar rectangular mesophases. By the time-resolved microwave conductivity method, the columnar rectangular phase of 8 b was shown to exhibit a moderate charge-carrier mobility of 0.12 cm2 V-1 s-1. These results indicate that large graphyne fragments can serve as good organic semiconductors. Copyright
