The Experts below are selected from a list of 84 Experts worldwide ranked by ideXlab platform
Siegfried E Drewes - One of the best experts on this subject based on the ideXlab platform.
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a novel Tetrahydrofuran Derivative via a tertiary ketol type rearrangement
Tetrahedron Letters, 1993Co-Authors: Siegfried E Drewes, Neville D Emslie, John S Field, A A Khan, Niyum RamesarAbstract:Abstract Hexahydro-3a, 7a-dihydroxy-3,7,7-trimethyl-2-phenyl-4H-furo [3,2-c]pyran-4-one 6 has been obtained from the reaction between tetrahydro-4, 4-dimethyl-2-oxo-3-furanyl propanoate 4 , benzaldehyde and base. The product is the result of a modified benzilic acid rearrangement.
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cyclization of a chiral α δ benzyloxyalkyl acrylate to a novel Tetrahydrofuran Derivative
Chemische Berichte, 1990Co-Authors: Siegfried E Drewes, Owen L Njamela, Gregory H P RoosAbstract:Methyl 3-hydroxy-2-(iodomethyl)-5-methylTetrahydrofuran-2-carboxylate (4) is synthesized from (3S)-3-(benzyloxy)butanal (2) via methyl 5-(benzyloxy)-3-hydroxy-2-methylenehexanoate (3a) as intermediate.
James T. Spencer - One of the best experts on this subject based on the ideXlab platform.
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Synthesis and Characterization of Oxonium Functionalized Rhenium Metallaborane
Journal of Chemical Crystallography, 2020Co-Authors: Pei Ma, Tiffany M. Smith Pellizzeri, Jon Zubieta, James T. SpencerAbstract:The synthesis, characterization, and reaction mechanism of a series of oxonium Derivatives of the rhenium containing metalladecaborane [ nido -6-Re(CO)_3B_9H_13][NMe_4] are reported herein. The oxonium species were synthesized using Tetrahydrofuran, 1,4-dioxane, and diethyl ether. The crystal structure of the Tetrahydrofuran Derivative [2-(CH_2)_4O- nido -6-Re(CO)_3B_9H_12] was determined and compared to the isostructural manganese compound. The title compound crystallizes in the Triclinic space group P -1 with (a = 7.0835(5) Å, b = 9.6971(6) Å, c = 12.5762(8) Å, α = 73.5750(10)º, β = 75.5520(10)º, γ = 87.061(2)º, volume = 802.22(9), Z = 2). This facile functionalization strategy will facilitate future investigations of rhenium containing metallaboranes and metallacarboranes. Graphical Abstract The synthesis, characterization, and reaction mechanism of a series of oxonium Derivatives of the rhenium containing metalladecaborane [ nido -6-Re(CO)_3B_9H_13][NMe_4] are reported, including the structural determination of [2-(CH_2)_4O- nido -6-Re(CO)_3B_9H_12].
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Synthesis and Characterization of Oxonium Functionalized Rhenium Metallaborane
Journal of Chemical Crystallography, 2018Co-Authors: Pei Ma, Tiffany M. Smith Pellizzeri, Jon Zubieta, James T. SpencerAbstract:The synthesis, characterization, and reaction mechanism of a series of oxonium Derivatives of the rhenium containing metalladecaborane [nido-6-Re(CO)3B9H13][NMe4] are reported herein. The oxonium species were synthesized using Tetrahydrofuran, 1,4-dioxane, and diethyl ether. The crystal structure of the Tetrahydrofuran Derivative [2-(CH2)4O-nido-6-Re(CO)3B9H12] was determined and compared to the isostructural manganese compound. The title compound crystallizes in the Triclinic space group P-1 with (a = 7.0835(5) A, b = 9.6971(6) A, c = 12.5762(8) A, α = 73.5750(10)o, β = 75.5520(10)o, γ = 87.061(2)o, volume = 802.22(9), Z = 2). This facile functionalization strategy will facilitate future investigations of rhenium containing metallaboranes and metallacarboranes.
Gregory H P Roos - One of the best experts on this subject based on the ideXlab platform.
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cyclization of a chiral α δ benzyloxyalkyl acrylate to a novel Tetrahydrofuran Derivative
Chemische Berichte, 1990Co-Authors: Siegfried E Drewes, Owen L Njamela, Gregory H P RoosAbstract:Methyl 3-hydroxy-2-(iodomethyl)-5-methylTetrahydrofuran-2-carboxylate (4) is synthesized from (3S)-3-(benzyloxy)butanal (2) via methyl 5-(benzyloxy)-3-hydroxy-2-methylenehexanoate (3a) as intermediate.
Giorgio Mattei - One of the best experts on this subject based on the ideXlab platform.
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characterization of bis β diimino tetracyanopyrrolizinido copper ii complex x ray crystal structure of the acetonitrile adduct and structural comparison with the Tetrahydrofuran Derivative
Polyhedron, 1993Co-Authors: Mario Bonamico, Vincenzo Fares, Alberto Flamini, Nicola Poli, Giorgio MatteiAbstract:Abstract The X-ray crystal structure of the bis(1,2,6,7-tetracyano-3,5-diimino-3,5-dihydro-pyrrolizinido)copper(II) complex, as an adduct with acetonitrile, CuL2 · 2CH3CN (1a), is described and compared with that of the analogous Tetrahydrofuran Derivative Cu L2 · 2THF (1b), previously reported. The molecular structure of both complexes is almost the same (the copper atom is centrosymmetrically surrounded by four chelating imino groups in a square planar configuration), whereas the spatial arrangement is totally different: in 1a the molecular units are slipped stacked, while in 1b they are mutually orthogonal. The results of a number of physical measurements on both 1a and 1b are reported and correlated with the structures. The solution electronic spectrum is also reported and compared with that, extraordinarily similar, of copper-phthalocyanine.
Pei Ma - One of the best experts on this subject based on the ideXlab platform.
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Synthesis and Characterization of Oxonium Functionalized Rhenium Metallaborane
Journal of Chemical Crystallography, 2020Co-Authors: Pei Ma, Tiffany M. Smith Pellizzeri, Jon Zubieta, James T. SpencerAbstract:The synthesis, characterization, and reaction mechanism of a series of oxonium Derivatives of the rhenium containing metalladecaborane [ nido -6-Re(CO)_3B_9H_13][NMe_4] are reported herein. The oxonium species were synthesized using Tetrahydrofuran, 1,4-dioxane, and diethyl ether. The crystal structure of the Tetrahydrofuran Derivative [2-(CH_2)_4O- nido -6-Re(CO)_3B_9H_12] was determined and compared to the isostructural manganese compound. The title compound crystallizes in the Triclinic space group P -1 with (a = 7.0835(5) Å, b = 9.6971(6) Å, c = 12.5762(8) Å, α = 73.5750(10)º, β = 75.5520(10)º, γ = 87.061(2)º, volume = 802.22(9), Z = 2). This facile functionalization strategy will facilitate future investigations of rhenium containing metallaboranes and metallacarboranes. Graphical Abstract The synthesis, characterization, and reaction mechanism of a series of oxonium Derivatives of the rhenium containing metalladecaborane [ nido -6-Re(CO)_3B_9H_13][NMe_4] are reported, including the structural determination of [2-(CH_2)_4O- nido -6-Re(CO)_3B_9H_12].
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Synthesis and Characterization of Oxonium Functionalized Rhenium Metallaborane
Journal of Chemical Crystallography, 2018Co-Authors: Pei Ma, Tiffany M. Smith Pellizzeri, Jon Zubieta, James T. SpencerAbstract:The synthesis, characterization, and reaction mechanism of a series of oxonium Derivatives of the rhenium containing metalladecaborane [nido-6-Re(CO)3B9H13][NMe4] are reported herein. The oxonium species were synthesized using Tetrahydrofuran, 1,4-dioxane, and diethyl ether. The crystal structure of the Tetrahydrofuran Derivative [2-(CH2)4O-nido-6-Re(CO)3B9H12] was determined and compared to the isostructural manganese compound. The title compound crystallizes in the Triclinic space group P-1 with (a = 7.0835(5) A, b = 9.6971(6) A, c = 12.5762(8) A, α = 73.5750(10)o, β = 75.5520(10)o, γ = 87.061(2)o, volume = 802.22(9), Z = 2). This facile functionalization strategy will facilitate future investigations of rhenium containing metallaboranes and metallacarboranes.