Visible-Light-Promoted Transition-Metal-Free Phosphinylation of Heteroaryl Halides in the Presence of Potassium <i>tert</i>-Butoxide
作者:Jia Yuan、Wai-Pong To、Zi-Yang Zhang、Chang-Duo Yue、Sixuan Meng、Jian Chen、Yungen Liu、Guang-Ao Yu、Chi-Ming Che
DOI:10.1021/acs.orglett.8b03265
日期:2018.12.21
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.
Cu/
<scp>Picolinamides‐Catalyzed</scp>
Coupling of (Hetero)aryl Halides with Secondary Phosphine Oxides and Phosphite
<sup>†</sup>
作者:Chao Fang、Bangguo Wei、Dawei Ma
DOI:10.1002/cjoc.202100354
日期:2021.11
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.
一些 4-羟基-吡啶甲酸衍生的酰胺被揭示为更有效的配体,用于(杂)芳基卤化物与仲氧化膦和亚磷酸酯的铜催化偶联。仅需要 3-5 mol% CuI 和配体即可确保与许多(杂)芳基溴化物和碘化物的偶联在 120 o C 下在 10-20 小时内完成。
Ni(II)/Zn Catalyzed Reductive Coupling of Aryl Halides with Diphenylphosphine Oxide in Water
P-Arylation in water has been developed via cross-coupling of arylhalides with diphenylphosphine oxide (Ph2P(O)H) and (RP)-(−)-menthyl benzylphosphinate catalyzed by NiCl2·6H2O/Zn under relatively mild conditions.
NiCl 2 ·6H 2 O / Zn催化的芳基卤化物与二苯基膦氧化物(Ph 2 P(O)H)和(R P)-(-)-薄荷基苄基次膦酸酯的交叉偶联已开发了水中的P-芳基化。相对温和的条件。
The synthesis and characterization of three oxidized derivatives of bis(diphenylphosphino)pyridine and their Sn(IV) complexes
作者:Richard Sevcik、Marek Necas、Josef Novosad
DOI:10.1016/s0277-5387(03)00291-2
日期:2003.6
The synthesis and spectroscopic characterization of three chalcogenophosphoryl ligands derived from pyridine is reported. The synthesis was based on the oxidation of C5H3N(PPh2)(2) by elementalsulfur and selenium, and hydrogen peroxide. As a part of our study on the coordination chemistry of the ligands, three new Sn(IV) complex cations of the general formula [Ph2P(E)-C5H3N-P(E)Ph-2]SnCl3}(+) (E
An Approach to Nonsymmetric Bis(tertiary phosphine oxides) Comprising Heterocyclic Fragments via the Pd-Catalyzed Phosphorylation
作者:Gladis G. Zakirova、Dmitrii Yu. Mladentsev、Nataliya N. Borisova
DOI:10.1055/s-0040-1706419
日期:2020.11
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