17 research outputs found

    Dichloridobis(2-methoxy­dibenzo[c,e][1,2]oxaphospho­rine-κP)platinum(II) trichloro­methane solvate

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    The title compound, [PtCl2(C13H11O2P)2]·CHCl3, has a rare PtCl2 bridging of two dibenzooxaphospho­rine ligands through the metal atom. The PtII ion is in a slightly distorted square-planar environment. The trichloro­methane solvent mol­ecule shows rotational disorder (major occupancy is 0.75) and is placed near to the inversion centre at (1/2, 1/2, 0) in channels parallel to the a axis. The solvent mol­ecule is linked to the complex mol­ecule via inter­molecular bifurcated C—H⋯Cl and C—H⋯O hydrogen bonds. The crystal structure is further stabilized by π–π inter­actions involving the benzene rings, with a centroid–centroid distance of 3.658 (8) Å

    Green chemical approaches and tools in the development of environmentally friendly synthetic methods

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    Addressing the recommendations of the 12 basic lows of green chemistry, the microwave technique was utilized in phospha-Mannich, Diels-Alder and inverse Wittig type reactions, moreover under solventless conditions. In the phase transfer catalysed alkylation of CH-acidic compounds, the quaternary onium salts could be substituted by MW irradiation. The effect of chiral phase transfer catalysts was compared on suitable, potentially enantioselective model reactions. Mono- and bidental P-ligands were developed to make available novel platinum complexes that can be useful as catalysts. Finally, esterifications including diesterifications were studied by in situ Fourier Transform IR spectroscopy

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