Search Results - "Hua, Guoxiong"

Formation and Reactivity of Phosphorus-Selenium Rings by Hua, Guoxiong, Woollins, J. Derek

“…Lawesson reagent for selenium fans: Phosphorus selenium heterocycles and, in particular, [PhPSe₂]₂ (known as Woollins' reagent) are proving valuable in the…”
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Efficient Synthesis of 2,4-Bis(phenyl)-1,3-diselenadiphosphetane-2,4-diselenide (Woollins’ Reagent) by Hua, Guoxiong, Woollins, J. Derek

“…An improved approach for the preparation of 2,4-bis­(phenyl)-1,3-diselena-2,4-diphosphetane-2,4-diselenide (Woollins’ reagent) is described. Reacting…”
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The syntheses of sulfides by deoxygenation of sulfoxides using Woollins’ reagent by Hua, Guoxiong, Woollins, J. Derek

“…An efficient deoxygenation of sulfoxides using a P–Se heterocycle is reported. Woollins’ reagent ( WR) acts as a deoxygenation reagent for a wide range of…”
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Synthesis and Single Crystal Structures of N -Substituted Benzamides and Their Chemoselective Selenation/Reduction Derivatives by Hua, Guoxiong, Carpenter-Warren, Cameron L, Cordes, David B, Slawin, Alexandra M Z, Woollins, J Derek

“…A series of -aryl- -(2-oxo-2-arylethyl) benzamides and cinnamides has been prepared. The reaction of the benzamides with Woollins' reagent, a highly efficient…”
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Diverse Derivatives of Selenoureas: A Synthetic and Single Crystal Structural Study by Hua, Guoxiong, Cordes, David B, Du, Junyi, Slawin, Alexandra M Z, Woollins, J Derek

“…Reacting aroyl chlorides with an equivalent of potassium selenocyanate, followed by treating with an equivalent of 1,2,4-tri-tert-butylaniline at room…”
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Synthesis and Single Crystal Structures of Substituted-1,3-Selenazol-2-amines by Hua, Guoxiong, Du, Junyi, Slawin, Alexandra M Z, Woollins, J Derek

“…The synthesis and X-ray single crystal structures of a series of new 4-substituted-1,3-selenazol-2-amines is reported. The efficient preparation of these…”
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Chelate and trans effect of P,O donor phosphine ligands on rhodium catalyzed carbonylation of methanol by Dutta, Dipak Kumar, Deb, Biswajit, Hua, Guoxiong, Woollins, J. Derek

“…[Display omitted] ▶ Synthesis of rhodium carbonyl complexes of P,O donor ortho-substituted triphenylphosphine ligands. ▶ Oxidative addition of CH 3I to square…”
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Selenation/Thionation of α-Amino Acids: Formation and X-ray Structures of Diselenopiperazine and Dithiopiperazine and Related Compounds by Hua, Guoxiong, Fuller, Amy L., Bühl, Michael, Slawin, Alexandra M. Z., Woollins, J. Derek

“…N‐Phenylglycine reacts with an equivalent of 2,4‐bis(phenyl)‐1,3‐diselenadiphosphetane 2,4‐diselenide (Woollins' reagent, WR) to generate as the major product…”
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Facile Synthesis and Structure of Novel 2,5-Disubstituted 1,3,4-Selenadiazoles by Hua, Guoxiong, Li, Yang, Fuller, Amy L., Slawin, Alexandra M. Z., Woollins, J. Derek

“…The reaction of hydrazide with carbonyl chloride in the presence of sodium carbonates leads to the corresponding 1,2‐diacylhydrazines [1a–t, R1C(O)NHNHC(O)R2,…”
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Novel Five- and Six-Membered Rings of Phosphorus–Selenium Heterocycles from Selenation of Amido-Schiff Bases by Hua, Guoxiong, Cordes, David B, Slawin, Alexandra M. Z, Woollins, J. Derek

“…Woollins’ reagent, [2,4-bis­(phenyl)-1,3-diselenadiphosphetane-2,4-diselenide], serving as a selenating-reductive cycloaddition reagent, reacts with…”
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Phosphorus-Sulfur Heterocycles Incorporating an O-P(S)-O or O-P(S)-S-S-P(S)-O Scaffold: One-Pot Synthesis and Crystal Structure Study by Hua, Guoxiong, Davidson, Kate, Cordes, David B, Du, Junyi, Slawin, Alexandra M Z, Woollins, J Derek

“…A new one-pot preparative route was developed to synthesize novel organophosphorus-sulfur heterocycles via the reaction of the four-membered ring thionation…”
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Novel Five- to Ten-Membered Organoselenium Heterocycles from the Selenation of Aromatic Diols by Hua, Guoxiong, Fuller, Amy L., Slawin, Alexandra M. Z., Woollins, J. Derek

“…Reaction of Woollins' reagent ― WR, 2,4‐bis(phenyl)‐1,3‐diselenadiphosphetane 2,4‐diselenide [{PhP(Se)(μ‐Se)}2] ― with aromatic diols in refluxing toluene…”
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Application of four-membered ring chalcogenation reagents to the synthesis of new phosphorus-chalcogen heterocycles by Hua, Guoxiong, Cordes, David B., Slawin, Alexandra M. Z., Woollins, J. Derek

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Novel heterocyclic selenazadiphospholaminediselenides, zwitterionic carbamidoyl(phenyl)-phosphinodiselenoic acids and selenoureas derived from cyanamides by Hua, Guoxiong, Zhang, Qingzhi, Li, Yang, Slawin, Alexandra M.Z., Woollins, J. Derek

“…2,4-Bis(phenyl)-1,3-diselenadiphosphetane-2,4-diselenide (Woollins’ reagent, WR) reacts with cyanamides ( 1a– h) in refluxing toluene to afford a series of…”
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Symmetrical spiro-phosphoroheterocycles from the selenation of carbohydrazides by Hua, Guoxiong, Cordes, David B., Li, Yang, Slawin, Alexandra M.Z., Derek Woollins, J.

“…Reaction of Woollins’ reagent with carbohydrazides provides a simple entry into five-co-ordinate spiro phosphorus heterocycles…”
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Novel Fluorinated Phosphorus-Sulfur Heteroatom Compounds: Synthesis and Characterization of Ferrocenyl- and Aryl-Phosphonofluorodithioic Salts, Adducts, and Esters by Hua, Guoxiong, Du, Junyi, Surgenor, Brian A, Slawin, Alexandra M Z, Woollins, J Derek

“…A series of novel ferrocenyl- and aryl-phosphonofluorodithioic salts, adducts, and esters has been prepared. The reaction of…”
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Rapid quantification of polycyclic aromatic hydrocarbons in hydroxypropyl- β-cyclodextrin (HPCD) soil extracts by synchronous fluorescence spectroscopy (SFS) by Hua, Guoxiong, Broderick, John, Semple, Kirk T., Killham, Ken, Singleton, Ian

“…Synchronous fluorescence spectroscopy (SFS) was directly applied to rapidly quantify selected polycyclic aromatic hydrocarbons (PAHs: benzo[a]pyrene and…”
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Potential use of DNA adducts to detect mutagenic compounds in soil by Hua, Guoxiong, Lyons, Brett, Killham, Ken, Singleton, Ian

“…In this study, three different soils with contrasting features, spiked with 300 mg benzo[ a]pyrene (BaP)/kg dry soil, were incubated at 20 °C and 60% water…”
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Potential application of synchronous fluorescence spectroscopy to determine benzo[ a]pyrene in soil extracts by Hua, Guoxiong, Killham, Ken, Singleton, Ian

“…Benzo[ a]pyrene (BaP) is a significant environmental pollutant and rapid, accurate methods to quantify this compound in soil for both research and…”
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1,2-Bis(2-bromo-benz-yl)diselane by Hua, Guoxiong, Fuller, Amy L, Slawin, Alexandra M Z, Woollins, J Derek

“…In the title compound, C(14)H(12)Br(2)Se(2), the Se-Se bond length [2.3034 (9) Å] is similar to those in diphenyl diselenide [2.3066 (7) and 2.3073 (10) Å] and…”
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