- Cu/Picolinamides-Catalyzed Coupling of (Hetero)aryl Halides with Secondary Phosphine Oxides and Phosphite?
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Some 4-hydroxy-picolinic acid derived amides were revealed as more efficient ligands for Cu-catalyzed coupling of (hetero)aryl halides with secondary phosphine oxides and phosphites. Only 3—5 mol% CuI and ligands were required to ensure coupling with a number of (hetero)aryl bromides and iodides to complete at 120 oC in 10—20 h.
- Fang, Chao,Wei, Bangguo,Ma, Dawei
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supporting information
p. 2957 - 2961
(2021/08/23)
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- An Approach to Nonsymmetric Bis(tertiary phosphine oxides) Comprising Heterocyclic Fragments via the Pd-Catalyzed Phosphorylation
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Nonsymmetric tertiary phosphine oxides with different five- and six-membered heterocyclic fragments such as pyridine, 2,2′-bipyridine, 1,10-phenantroline, quinoline, imidazole, and thiazole were synthesized in good yields via the successive introduction of phosphine oxide groups into the initial dihalogenated heterocycles by means of Pd-catalyzed phosphorylation reaction. The synthesis of pyridine-type compounds is hindered by competing double coupling, while for five-membered heterocycles the principal difficulty is the dehalogenation. Both side processes were successfully suppressed by the use of an excess of a dihalide (which can be easily recovered during the product purification step), proper phosphine ligand for palladium, and nonpolar solvent such as toluene.
- Zakirova, Gladis G.,Mladentsev, Dmitrii Yu.,Borisova, Nataliya N.
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supporting information
p. 1833 - 1837
(2020/09/21)
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- Visible-Light-Promoted Transition-Metal-Free Phosphinylation of Heteroaryl Halides in the Presence of Potassium tert-Butoxide
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A novel visible-light-promoted C-P bond formation reaction in the absence of both transition metal and photoredox catalysts is disclosed. By employing easily available and inexpensive heteroaryl chlorides/bromides as substrates, a variety of heteroaryl phosphine oxides were obtained in moderate to good yields. This strategy provides a simple and efficient route to heteroaryl phosphine oxides.
- Yuan, Jia,To, Wai-Pong,Zhang, Zi-Yang,Yue, Chang-Duo,Meng, Sixuan,Chen, Jian,Liu, Yungen,Yu, Guang-Ao,Che, Chi-Ming
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supporting information
p. 7816 - 7820
(2019/01/04)
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- Synthesis of chelating tertiary phosphine oxides via palladium-catalysed C–P bond formation
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Bis(diphenylphosphine oxides) and bis(tert-butyl(phenyl)phosphine oxides) of 1,10-phenanthroline, 2,2′-bipyridine and pyridine were synthesised in good yields via the Pd(OAc)2/dppf mediated cross-coupling reactions between 6,6′-dichloro-2,2′-bi
- Zakirova, Gladis G.,Mladentsev, Dmitrii Yu.,Borisova, Nataliya E.
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supporting information
p. 3415 - 3417
(2017/08/10)
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- Ni(II)/Zn catalyzed reductive coupling of aryl halides with diphenylphosphine oxide in water
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P-Arylation in water has been developed via cross-coupling of aryl halides with diphenylphosphine oxide (Ph2P(O)H) and (RP)-(-)- menthyl benzylphosphinate catalyzed by NiCl2?6H2O/Zn under relatively mild conditions.
- Zhang, Xinghua,Liu, Huizhi,Hu, Xiaomei,Tang, Guo,Zhu, Jun,Zhao, Yufen
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supporting information; experimental part
p. 3478 - 3481
(2011/09/13)
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- LIGHT-EMITTING DEVICE CONTAINING BIS-PHOSPHINEOXIDE COMPOUND
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An OLED device comprises an anode and a cathode and having therebetween a light emitting layer containing an emissive material, wherein a layer between the anode and cathode contains a phosphineoxide compound bearing two or more tri(hetero)arylphosphineoxide groups, provided these groups are selected to give a compound with a Et ≥ 2.65 eV.
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Page/Page column 27-28
(2010/11/25)
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