6737-43-5Relevant articles and documents
Versatile Visible-Light-Driven Synthesis of Asymmetrical Phosphines and Phosphonium Salts
Arockiam, Percia Beatrice,Lennert, Ulrich,Graf, Christina,Rothfelder, Robin,Scott, Daniel J.,Fischer, Tillmann G.,Zeitler, Kirsten,Wolf, Robert
supporting information, p. 16374 - 16382 (2020/11/03)
Asymmetrically substituted tertiary phosphines and quaternary phosphonium salts are used extensively in applications throughout industry and academia. Despite their significance, classical methods to synthesize such compounds often demand either harsh reaction conditions, prefunctionalization of starting materials, highly sensitive organometallic reagents, or expensive transition-metal catalysts. Mild, practical methods thus remain elusive, despite being of great current interest. Herein, we describe a visible-light-driven method to form these products from secondary and primary phosphines. Using an inexpensive organic photocatalyst and blue-light irradiation, arylphosphines can be both alkylated and arylated using commercially available organohalides. In addition, the same organocatalyst can be used to transform white phosphorus (P4) directly into symmetrical aryl phosphines and phosphonium salts in a single reaction step, which has previously only been possible using precious metal catalysis.
STABILIZATION OF ACTIVE METAL CATALYSTS AT METAL-ORGANIC FRAMEWORK NODES FOR HIGHLY EFFICIENT ORGANIC TRANSFORMATIONS
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Paragraph 0404-0409, (2019/01/07)
Metal-organic framework (MOFs) compositions based on post?synthetic metalation of secondary building unit (SBU) terminal or bridging OH or OH2 groups with metal precursors or other post-synthetic manipulations are described. The MOFs provide a versatile family of recyclable and reusable single-site solid catalysts for catalyzing a variety of asymmetric organic transformations, including the regioselective boryiation and siiylation of benzyiic C—H bonds, the hydrogenation of aikenes, imines, carbonyls, nitroarenes, and heterocycles, hydroboration, hydrophosphination, and cyclization reactions. The solid catalysts can also be integrated into a flow reactor or a supercritical fluid reactor.
With machine phosphine molybdenum complex, preparation method and application
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Paragraph 0061; 0068-0070, (2017/08/31)
The invention discloses an organic phosphonium molybdenum complex, a preparation method and application. The organic phosphonium molybdenum complex has the following general formula: Mo[P(Ph)2R]2Cl5, wherein the P(Ph)2R is alkyldiphenylphosphine; the R is linear-chain alkyl with the carbon atom number of 3-10. According to the organic phosphonium molybdenum complex provided by the invention, alkyldiphenylphosphine is adopted as the ligand, and the organic phosphonium molybdenum complex can be dissolved in dicyclopentadiene, and can form a homogeneous system with dicyclopentadiene when used as a main catalyst to catalyze dicyclopentadiene for ring opening polymerization, so that the catalytic efficiency is greatly improved, and the production efficiency of polydicyclopentadiene is improved; the organic phosphonium molybdenum complex is relatively high in catalytic activity, and the polydicyclopentadiene product prepared through adopting the organic phosphonium molybdenum complex as the main catalyst is high in quality and excellent in the mechanical properties, such as, tensile strength and impact strength; the organic phosphonium molybdenum complex is relatively high in chemical stability, insensitive to air and moisture, simple in preparation, low in cost and suitable for popularization and application.
