- Synthesis of triisocyanomesitylene β?diketiminato copper(I) complexes and evaluation of isocyanide π-back bonding
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A new 2,4,6-triisocyanomesitylene ligand was synthesized and along with 1,4-isocyanobenzene utilized to prepare unique N-aryl-N′-alkylpyridyl β-diketiminato copper(I) complexes. Crystallographic characterization of 2,4,6-triisocyanomesitylene, dinuclear a
- Huang, Yen-Chung,Chen, Hsing-Yin,Chang, Yu-Lun,Vasanthakumar, Punitharaj,Chen, Shih-Yun,Kao, Chai-Lin,Wu, Carol Hsin-Yi,Hsu, Sodio C.N.
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- Synthetic method for 2,4,6-trimethylbenzene-1,3,5-triamine and N,N,N-triacylated product
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The invention provides a synthetic method for 2,4,6-trimethylbenzene-1,3,5-triamine and an N,N,N-triacylated product. The method comprises the following steps: S1, performing a nitration reaction on mesitylene with structural formula IV as a reaction raw material in the presence of a mixed acid of fuming nitric acid and concentrated sulfuric acid, and after the nitration reaction, performing filtration and drying to obtain 1,3,5-trimethyl-2,4,6-trinitryl benzene with structural formula III; S2, performing a hydrogenation reaction on 1,3,5-trimethyl-2,4,6-trinitryl benzene and a reducer hydrazine hydrate to reduce nitryl to amino, and performing purification to obtain 2,4,6-trimethylbenzene-1,3,5-triamine with structure formula II; and S3, performing an acylation reaction on 2,4,6-trimethylbenzene-1,3,5-triamine and an acylation reagent to obtain N,N,N-triacyl-2,4,6-trimethylbenzene-1,3,5-triamine with structural formula I.
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Paragraph 0071; 0072; 0073; 0074-0079; 0099; 0104
(2017/12/27)
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- A new synthetic strategy to prepare throne and calix diastereoisomers of parallel tris-Trger's bases
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The calix diastereoisomers of the parallel tris-Trger's base (tris-TB) derivatives were suggested as potential cavitands in 2002, and the first members of this cavitand family were introduced in 2007. The synthetic strategy enabling the preparation of nap
- Havlk, Martin,Dolensky, Bohumil,Kessler, Jiri,Cisarova, Ivana,Kral, Vladimir
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experimental part
p. 127 - 134
(2012/06/30)
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- SUBSTITUTED NITROBENZENE DERIVATIVES AS MEDICINES AND OTHER USEFUL USES THEREOF
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The present invention relates to a use of substituted nitrobenzene derivatives of general Formula I in medicine and health food, the pharmaceutical compositions comprising substituted nitrobenzene derivatives of general Formula I and the methods thereof for the prophylaxis and treatment of diseases.
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- Towards the total synthesis of cyclo[n] carbons and the generation of cyclo[6]carbon
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We describe efforts towards the synthesis of some allotropes of carbon, the cyclo[n]carbons where n = 18, 24 and 30. The key intermediate 11 is hexa-1,3,5-triyne with the central triple bond masked as a 1-amino-1,2,3-triazole derivative. Cyclo-oligomerisation of this by oxidative coupling gives macrocyclic precursors of C18, C24 and C30. C30 is a proposed intermediate in the formation of C60 and we also describe some attempts at the synthesis of C60 via the chemical generation of benzotriyne, cyclo[6]carbon.
- Adamson, George A.,Rees, Charles W.
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p. 1535 - 1543
(2007/10/03)
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- Ozone-mediated Nitration of Alkylbenzenes and Related Compounds with Nitrogen Dioxide
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In the presence of ozone, nitrogen dioxide exhibits a strong nitrating ability for alkylbenzenes at low temperatures, converting them into the corresponding nitro derivatives in high yield.The addition of a protonic acid as catalyst enhances considerably the ability of this nitrating system and leads to a good yield of polynitro compounds.The reaction is clean and proceeds rapidly without any accompanying side-chain substitution or aryl-aryl coupling.It shows no kinetic dependence on the concentration of substrates and, as far as can be judged from relative reactivities and isomer distributions of products, it gives the appearance of being an electrophilic aromatic process.A possible role for nitrogen trioxide has been suggested as the initial electrophilic agent for the nitration of alkylbenzenes.
- Suzuki, Hitomi,Murashima, Takashi,Kozai, Iku,Mori, Tadashi
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p. 1591 - 1598
(2007/10/02)
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- A Non-acid Methodology for Polynitration of Arenes at Low Temperatures
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In the presence of ozone and an appropriate catalyst, nitrogen dioxide acts as a powerful nitrating agent at low temperatures, converting arenes into polynitro derivatives in good yields.
- Suzuki, Hitomi,Murashima, Takashi,Shimizu, Kazuhiro,Tsukamoto, Kenkichi
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p. 1049 - 1050
(2007/10/02)
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- 1-Azaadamantanes from Substituted Phloroglucinols
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The heterocycles 3 are synthesised from substituted phloroglucinols 2 and hexamethylenetetramine in one step.Special chemical properties of these 1-azaadamantanes are, for example, the formation of a BH3-complex 4 and the stereoselective reduction to the trialcohol 6.The reaction of 6 with trimethoxymethane yields the heterodiamantane.
- Risch, Nikolaus
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p. 4849 - 4856
(2007/10/02)
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