1435941-87-9Relevant academic research and scientific papers
A robust, moisture- and air-stable phosphine mono-ylide palladacycle precatalyst: A simple and highly efficient system for mizoroki-heck reactions
Sabounchei, Seyyed Javad,Ahmadi, Mohsen,Azizi, Tayebeh,Panahimehr, Mohammad
, p. 336 - 342 (2014)
A palladacycle phosphine mono-ylide complex was identified as an efficient catalyst system for the Mizoroki-Heck cross-coupling reactions of aromatic or aliphatic olefins with a variety of aryl bromides and chlorides, including those containing electron-donating or electron-withdrawing substituents. The reactions, which proceeded in moderate to excellent yields, required relatively low loadings of palladium (10 ppm) and were performed under aerobic conditions. High catalyst activities with turnover frequencies of up to 20,000 h -1 were observed at 130? °C. Georg Thieme Verlag Stuttgart New York.
Mercury(II) complexes of new bidentate phosphorus ylides: Synthesis, spectra and crystal structures
Sabounchei, Seyyed Javad,Panahimehr, Mohammad,Khavasi, Hamid Reza,Bagherjeri, Fateme Akhlaghi,Boscovic, Collete
, p. 624 - 632 (2014/05/06)
The reaction of dppm (1,1-bis(diphenylphosphino)methane) with 2-bromo-4-phenylacetophenone and benzyl bromoacetate in chloroform produces new phosphonium salts, [Ph2PCH2PPh2CH 2C(O)C6H4Ph]Br (I) and [Ph2PCH 2PPh2CH2COOCH2Ph]Br (II). By allowing the phosphonium salts to react with the appropriate base, the bidentate phosphorus ylides, Ph2PCH2PPh2=C(H)C(O)C 6 H4Ph (III) and Ph2PCH2PPh 2=C(H)C(O)OCH2Ph (IV), were obtained. The reaction of these ligands with mercury(II) halides in dry methanol led to the formation of the mononuclear complexes {HgX2[(Ph2PCH 2PPh2C(H)C(O)C6H4Ph)]} (X = Cl (V); X = Br (VI); X = I (VII)) and {HgX2[(Ph2PCH 2PPh2C(H)COOCH2Ph)]} (X = Cl (VIII); X = Br (IX); X = I (X)). The FTIR and 1H, 31P and 13C NMR spectra were studied. The structure of compound III was unequivocally determined by the single-crystal X-ray diffraction technique. Single-crystal X-ray analysis of the {HgBr2[(Ph2PCH2PPh 2C(H)C(O)C6H4Me)]} complex (XI) revealed the presence of a mononuclear complex containing the Hg atom in a distorted tetrahedral environment. In all complexes, the ylides referred to above were coordinated through the ylidic carbon and the phosphine atom.
