Porous magnesium carboxylate framework: synthesis, X-ray crystal structure, gas adsorption property and heterogeneous catalytic aldol condensation reaction

A CaMnAl-hydrotalcite solid basic catalyst was prepared based on the memory effect of LDHs, which exhibited extremely high heterogeneous catalytic performance toward the aldol condensation reaction.

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Syntheses of Pyrazolo-, Isoxazolo-, Pyrido- and Pyrimido-Carbazoles from 2-(3′,4′-Dimethoxybenzylidene)-2,3,4,9-Tetrahydrocarbazol-1-Ones

Journal of Chemical Research ◽

10.3184/030823408x361110 ◽

2008 ◽

Vol 2008 (10) ◽

pp. 572-577 ◽

Cited By ~ 7

Author(s):

Makuteswaran Sridharan ◽

Lucas K. Beagle ◽

Matthias Zeller ◽

Karnam Jayarampillai Rajendra Prasad

Keyword(s):

Crystal Structure ◽

Single Crystal ◽

Hydrazine Hydrate ◽

Aldol Condensation ◽

Hydroxylamine Hydrochloride ◽

Molecular And Crystal Structure ◽

X Ray Diffraction ◽

X Ray ◽

Guanidinium Nitrate

Mixed aldol condensation of 2,3,4,9-tetrahydrocarbazol-1-ones with 3,4-dimethoxybenzaldehyde (veratraldehyde) yielded 2-(3′,4′-dimethoxybenzylidene)-2,3,4,9-tetrahydrocarbazol-1-ones. These enones on reaction with hydrazine hydrate, hydroxylamine hydrochloride, malononitrile and guanidinium nitrate under different conditions yielded the corresponding pyrazolo[3,4-a]-, isoxazolo[3,4-a]-, pyrido[2,3-a]-, and pyrimido[4,5-a]-carbazoles respectively. The molecular and crystal structure of 2-(3′,4′-dimethoxybenzylidene)-2,3,4,9-tetrahydro-1H-carbazol-1-one resolved by single crystal X-ray diffraction is discussed.

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Dinuclear Copper(II) 3,4,5-Tri-O-benzylgallate

Open Chemistry Journal ◽

10.2174/1874842201906010019 ◽

2019 ◽

Vol 6 (1) ◽

pp. 19-26 ◽

Cited By ~ 1

Author(s):

Masahiro Mikuriya ◽

Chihiro Yamakawa ◽

Naoyuki Masuda ◽

Daisuke Yoshioka ◽

Sayuri Yamaguchi ◽

...

Keyword(s):

Crystal Structure ◽

Total Synthesis ◽

Temperature Dependence ◽

Gas Adsorption ◽

Adsorption Property ◽

Copper Acetate ◽

Xrd Analysis ◽

Carboxylate Ligand ◽

Dinuclear Copper ◽

Carboxylate Complex

Background:Ellagitannins have attracted much attention because of the biological and pharmacological activities. In the total synthesis of ellagitannins, 3,4,5-tri-O-benzylgallic acid has been a key compound to introduce the protected galloyl group. From the perspective of coordination chemistry, 3,4,5-tri-O-benzylgallic acid is an interesting carboxylate ligand which might be capable of dinuclear carboxylate complex. Such a dinuclear carboxylate complex might be interesting as a new example of copper acetate type complexes.Objectives:The objective of the work is to synthesize a copper acetate type complex by using 3,4,5-tri-O-benzylgallic acid and to see a new feature of copper acetate compounds, by elucidating the crystal structure, magnetic property, and adsorption property for N2gas.Methods:Copper(II) 3,4,5-tri-O-benzylgallate has been synthesized by a reaction of 3,4,5-tri-O-benzylgallic acid and copper(II) nitrate at pH=9 condition. The isolated complex was characterized using single-crystal X-ray structure analysis, XRD analysis, UV-visible spectroscopy, IR spectroscopy, and temperature dependence of magnetic susceptibility.Results:The crystal structure shows a crystallographically centrosymmetric dinuclear molecule with four carboxylato-bridges and axial dimethylformamide molecules and crystal dmf molecules [Cu···Cu 2.6345(12) Å]. In the crystal, 1D supramolecular assembly by π-π interaction between the benzyl aromatic rings of dinuclear molecules was observed. Temperature dependence of magnetic susceptibilities showed a considerable antiferromagnetic interaction between the two copper(II) ions (2J = –214 cm–1). Type-II gas-adsorption property was observed for N2.Conclusion:A key-compound for the total synthesis of ellagitannins, 3,4,5-tri-O-benzylgallic acid (Htbng), was shown to be a new ligand for the synthesis of dinuclear copper acetate analogue with a lantern-type core, extending the realm of copper acetate clusters.

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One-Dimensional Chain-Type Dicopper Coordination Polymer Linked by 1,4-Di(4-pyridyl)benzene; Synthesis, Crystal Structure, Magnetic Property, and Gas-Adsorption Property

Magnetochemistry ◽

10.3390/magnetochemistry4020026 ◽

2018 ◽

Vol 4 (2) ◽

pp. 26

Author(s):

Natsumi Yano ◽

Makoto Handa ◽

Minoru Mitsumi ◽

Yusuke Kataoka

Keyword(s):

Crystal Structure ◽

Magnetic Property ◽

Coordination Polymer ◽

Gas Adsorption ◽

Adsorption Property ◽

Dimensional Chain ◽

One Dimensional ◽

Chain Type

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Synthesis, crystal structure, and gas adsorption property of microporous solid by assembly of 1-D coordination polymer with a zigzag skeleton

Inorganic Chemistry Communications ◽

10.1016/j.inoche.2003.10.028 ◽

2004 ◽

Vol 7 (1) ◽

pp. 125-127 ◽

Cited By ~ 6

Author(s):

Satoshi Takamizawa ◽

Ei-ichi Nakata ◽

Teruo Saito

Keyword(s):

Crystal Structure ◽

Coordination Polymer ◽

Gas Adsorption ◽

Adsorption Property

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Synthesis and Crystal Structure Hindered Amine with Methaerylate

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1095.381 ◽

2015 ◽

Vol 1095 ◽

pp. 381-384

Author(s):

Wei Wei Xue ◽

Xiu Qin Zhang ◽

Qiang Chen ◽

Ji Jin ◽

Guo Yuan Lu

Keyword(s):

Crystal Structure ◽

Methacrylic Acid ◽

Condensation Reaction ◽

Crystallographic Analysis ◽

Synthesis And Crystal Structure ◽

X Ray

The high pure hindered amine with methaerylate (2,2,6,6-tetramethylpiperidin-4-yl methacrylate) 4 was synthesized by a condensation reaction of 2,2,6,6-tetramethylpiperidin-4-ol and methacrylic anhydride via isolation of the salt (1:1) of 4 and methacrylic acid in an improved yield (total 80%). The structure of the salt 4 of hindered amine was demonstrated by X-ray crystallographic analysis.

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