The Experts below are selected from a list of 51 Experts worldwide ranked by ideXlab platform
Hamed Ghaedi - One of the best experts on this subject based on the ideXlab platform.
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Synthesis and Structures of 3-Ethyl 1,2-Dimethyl 5-Chloroindolizine-1,2,3-Tricarboxylate and 3-Ethyl 1,2-Dimethyl 5-Bromoindolizine-1,2,3-Tricarboxylate from 2-Chloro-1-(2-Ethoxy-2-Oxoethyl)Pyridin-1-Ium Bromide
Journal of Chemical Crystallography, 2016Co-Authors: Gholamhossein Khalili, Farzaneh Farid Ghiasi, Seyed Abolghasem Hashemi, Hamed GhaediAbstract:In this title compounds 3-ethyl 1,2-dimethyl 5-chloroindolizine-1,2,3-tricarboxylate 3 and 3-ethyl 1,2-dimethyl 5-bromoindolizine-1,2,3-tricarboxylate 4 , there are two molecules in the asymmetric unit. This crystal was prepared by one-pot multicomponent reaction of 2-chloro-1-(2-ethoxy-2-oxoethyl)pyridin-1-ium bromide salt 1 with dimethyl acetylenedicarboxylate 2 in the presence triethylphosphite at room temperature in high yield. The indolozine products were confirmed with IR, mass, ^1H, and ^13C NMR. X-ray Crystallographic Technique was also conducted and the result showed the crystal belong to monoclinic system, space group pbca with a = 17.6696(7), b = 7.9336(3), c = 23.2275(9)Å, v = 3093.1(2)Å^3, D _ c = 1.521 mg/m^3, µ = 0.31 mm^−1. In both compounds no typical hydrogen bonding interactions could be located. Graphical Abstract Synthesis, and crystal structure of two 3-ethyl 1,2-dimethyl 5-chloroindolizine-1,2,3-tricarboxylate and 3-ethyl 1,2-dimethyl 5-bromoindolizine-1,2,3-tricarboxylate are reported.
Gholamhossein Khalili - One of the best experts on this subject based on the ideXlab platform.
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Synthesis and Structures of 3-Ethyl 1,2-Dimethyl 5-Chloroindolizine-1,2,3-Tricarboxylate and 3-Ethyl 1,2-Dimethyl 5-Bromoindolizine-1,2,3-Tricarboxylate from 2-Chloro-1-(2-Ethoxy-2-Oxoethyl)Pyridin-1-Ium Bromide
Journal of Chemical Crystallography, 2016Co-Authors: Gholamhossein Khalili, Farzaneh Farid Ghiasi, Seyed Abolghasem Hashemi, Hamed GhaediAbstract:In this title compounds 3-ethyl 1,2-dimethyl 5-chloroindolizine-1,2,3-tricarboxylate 3 and 3-ethyl 1,2-dimethyl 5-bromoindolizine-1,2,3-tricarboxylate 4 , there are two molecules in the asymmetric unit. This crystal was prepared by one-pot multicomponent reaction of 2-chloro-1-(2-ethoxy-2-oxoethyl)pyridin-1-ium bromide salt 1 with dimethyl acetylenedicarboxylate 2 in the presence triethylphosphite at room temperature in high yield. The indolozine products were confirmed with IR, mass, ^1H, and ^13C NMR. X-ray Crystallographic Technique was also conducted and the result showed the crystal belong to monoclinic system, space group pbca with a = 17.6696(7), b = 7.9336(3), c = 23.2275(9)Å, v = 3093.1(2)Å^3, D _ c = 1.521 mg/m^3, µ = 0.31 mm^−1. In both compounds no typical hydrogen bonding interactions could be located. Graphical Abstract Synthesis, and crystal structure of two 3-ethyl 1,2-dimethyl 5-chloroindolizine-1,2,3-tricarboxylate and 3-ethyl 1,2-dimethyl 5-bromoindolizine-1,2,3-tricarboxylate are reported.
Seyed Abolghasem Hashemi - One of the best experts on this subject based on the ideXlab platform.
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Synthesis and Structures of 3-Ethyl 1,2-Dimethyl 5-Chloroindolizine-1,2,3-Tricarboxylate and 3-Ethyl 1,2-Dimethyl 5-Bromoindolizine-1,2,3-Tricarboxylate from 2-Chloro-1-(2-Ethoxy-2-Oxoethyl)Pyridin-1-Ium Bromide
Journal of Chemical Crystallography, 2016Co-Authors: Gholamhossein Khalili, Farzaneh Farid Ghiasi, Seyed Abolghasem Hashemi, Hamed GhaediAbstract:In this title compounds 3-ethyl 1,2-dimethyl 5-chloroindolizine-1,2,3-tricarboxylate 3 and 3-ethyl 1,2-dimethyl 5-bromoindolizine-1,2,3-tricarboxylate 4 , there are two molecules in the asymmetric unit. This crystal was prepared by one-pot multicomponent reaction of 2-chloro-1-(2-ethoxy-2-oxoethyl)pyridin-1-ium bromide salt 1 with dimethyl acetylenedicarboxylate 2 in the presence triethylphosphite at room temperature in high yield. The indolozine products were confirmed with IR, mass, ^1H, and ^13C NMR. X-ray Crystallographic Technique was also conducted and the result showed the crystal belong to monoclinic system, space group pbca with a = 17.6696(7), b = 7.9336(3), c = 23.2275(9)Å, v = 3093.1(2)Å^3, D _ c = 1.521 mg/m^3, µ = 0.31 mm^−1. In both compounds no typical hydrogen bonding interactions could be located. Graphical Abstract Synthesis, and crystal structure of two 3-ethyl 1,2-dimethyl 5-chloroindolizine-1,2,3-tricarboxylate and 3-ethyl 1,2-dimethyl 5-bromoindolizine-1,2,3-tricarboxylate are reported.
Farzaneh Farid Ghiasi - One of the best experts on this subject based on the ideXlab platform.
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Synthesis and Structures of 3-Ethyl 1,2-Dimethyl 5-Chloroindolizine-1,2,3-Tricarboxylate and 3-Ethyl 1,2-Dimethyl 5-Bromoindolizine-1,2,3-Tricarboxylate from 2-Chloro-1-(2-Ethoxy-2-Oxoethyl)Pyridin-1-Ium Bromide
Journal of Chemical Crystallography, 2016Co-Authors: Gholamhossein Khalili, Farzaneh Farid Ghiasi, Seyed Abolghasem Hashemi, Hamed GhaediAbstract:In this title compounds 3-ethyl 1,2-dimethyl 5-chloroindolizine-1,2,3-tricarboxylate 3 and 3-ethyl 1,2-dimethyl 5-bromoindolizine-1,2,3-tricarboxylate 4 , there are two molecules in the asymmetric unit. This crystal was prepared by one-pot multicomponent reaction of 2-chloro-1-(2-ethoxy-2-oxoethyl)pyridin-1-ium bromide salt 1 with dimethyl acetylenedicarboxylate 2 in the presence triethylphosphite at room temperature in high yield. The indolozine products were confirmed with IR, mass, ^1H, and ^13C NMR. X-ray Crystallographic Technique was also conducted and the result showed the crystal belong to monoclinic system, space group pbca with a = 17.6696(7), b = 7.9336(3), c = 23.2275(9)Å, v = 3093.1(2)Å^3, D _ c = 1.521 mg/m^3, µ = 0.31 mm^−1. In both compounds no typical hydrogen bonding interactions could be located. Graphical Abstract Synthesis, and crystal structure of two 3-ethyl 1,2-dimethyl 5-chloroindolizine-1,2,3-tricarboxylate and 3-ethyl 1,2-dimethyl 5-bromoindolizine-1,2,3-tricarboxylate are reported.
Rengan Ramesh - One of the best experts on this subject based on the ideXlab platform.
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Square-planar Ni(II) thiosemicarbazonato complex as an easily accessible and convenient catalyst for Sonogashira cross-coupling reaction
Tetrahedron Letters, 2016Co-Authors: Rupesh Narayana Prabhu, Rengan RameshAbstract:Abstract A simple route for the synthesis of a new square-planar nickel(II) complex bearing 2-((3-methylthiophen-2-yl)methylene)-N-phenylhydrazinecarbothioamide ligand has been described. The composition of the complex has been established by elemental analysis, FT-IR, NMR, and single crystal X-ray Crystallographic Technique. The complex acts as an active homogeneous catalyst for the Sonogashira reaction of phenylacetylene with electron deficient (activating) and electron rich (deactivating) aryl halides (iodides and bromides) under optimized conditions.
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An efficient trifunctional benzhydrazone ligated Pd(II) complex for Heck reaction of aryl bromides
Tetrahedron Letters, 2015Co-Authors: Subramanian Muthumari, Nanjan Mohan, Rengan RameshAbstract:Abstract Synthesis of air and thermally stable trifunctional O , N , and O -terdentate benzhydrazone Pd(II) complex is reported and characterized by elemental analysis, spectral methods, and single crystal X-ray Crystallographic Technique. The new and reusable homogeneous catalyst has been effectively applied to the Mizoroki–Heck reaction of activated and deactivated aryl bromides with various olefins under mild reaction conditions in good to excellent yields up to 99%.
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Catalytic application of dinuclear palladium(II) bis(thiosemicarbazone) complex in the Mizoroki-Heck reaction
Tetrahedron Letters, 2012Co-Authors: Rupesh Narayana Prabhu, Rengan RameshAbstract:A convenient synthesis of new square planar dinuclear palladium(II) terephthaldehyde bis(thiosemicarbazone) complex has been described. The compositions of the complex have been established by elemental analysis, spectral methods and single crystal X-ray Crystallographic Technique. The new complex acts as an active recyclable homogeneous catalyst for the Mizoroki-Heck reaction of electron deficient (activating) and electron rich (deactivating) aryl halides with various olefins under optimized conditions.