135014-10-7Relevant academic research and scientific papers
Direct observation of reduction of Cu(II) to Cu(I) by terminal alkynes
Zhang, Guanghui,Yi, Hong,Zhang, Guoting,Deng, Yi,Bai, Ruopeng,Zhang, Heng,Miller, Jeffrey T.,Kropf, Arthur J.,Bunel, Emilio E.,Lei, Aiwen
, p. 924 - 926 (2014)
X-ray absorption spectroscopy and in situ electron paramagnetic resonance evidence were provided for the reduction of Cu(II) to Cu(I) species by alkynes in the presence of tetramethylethylenediamine (TMEDA), in which TMEDA plays dual roles as both ligand and base. The structures of the starting Cu(II) species and the obtained Cu(I) species were determined as (TMEDA)CuCl2 and [(TMEDA)CuCl]2 dimer, respectively.
Unidirectional cis-trans photoisomerization of cis-3,3′-bis(diphenylhydroxymethyl)stilbene in inclusion complex crystals
Tanaka, Koichi,Hiratsuka, Takaichi,Ohba, Shigeru,Naimi-Jamal, M. Reza,Kaupp, Gerd
, p. 905 - 912 (2007/10/03)
When a 1:1 complex of cis-3,3′-bis(diphenylhydroxymethyl)stilbene (1) with acetone was irradiated in the solid state at room temperature using a high-pressure mercury lamp with a Pyrex filter for 6 h, a 1:1 complex of the trans-isomer (2) with acetone was
Alkyne metathesis with simple catalyst systems: High yield dimerization of propynylated aromatics; scope and limitations
Pschirer, Neil Gregory,Bunz, Uwe H. F.
, p. 2481 - 2484 (2007/10/03)
High yield dimerization of propynylated benzenes and propynylnaphthalene by a mixture of Mo(CO)6 and 4-chlorophenol at 140 °C in 1,2-dichlorobenzene is reported to give the corresponding disubstituted alkynes. The scope and limitation of the reaction and the influence of substitution pattern and substitution type are discussed. Oxygen or nitrogen carrying substrates metathesize in moderate to good yields and ortho-alkyl substituted examples form the respective tolanes very efficiently.
Oxidation of Aromatic Compounds. IV. Oxidation of Symmetrical Diarylacetylenes in the CF3COOH-CH2Cl2-PbO2 System. A New One-Pot Synthesis of 1,2,3,4-Tetraaryl-2-butene-1,4-diones
Rudenko, A. P.,Vasil'ev, A. V.
, p. 1360 - 1379 (2007/10/03)
Oxidation of symmetrical diarylacetylenes in the CF3COOH-CH2Cl2-PbO2 system (0-20 deg C, 1-3 h) yields 1,2,3,4-tetraaryl-2-butene-1,4-diones.According to (1)H NMR and GC-MS data the compounds synthesized have Z configuration.
