874-90-8Relevant articles and documents
Structural studies of two isoelectronic tetrakis isocyano complexes
Perrine, Cynthia L.,Zeller, Matthias,Woolcock, John,Styranec, Timothy M.,Hunter, Allen D.
, p. 289 - 295 (2010)
Two isoelectronic tetrakis isocyano compounds, tetra(p-isocyanoanisole) nickel(0) and tetra(p-isocyanoanisole)copper(I) hexafluorophosphate were synthesized from nickel bis cyclooctadiene and copper (I) tetra acetonitrile hexafluorophosphate and the isonitrile, respectively, and their structures were determined. The nickel complex crystallizes in the orthorhombic space group P212121 with a = 9.6709(8), b = 15.2324(13), c = 19.0955(16) A and Z = 4. The copper salt forms crystals with a tetragonal setting in P4/n with a = b = 15.8206(5), c = 6.5848(4) A and Z = 2. Both complexes exhibit the approximate tetrahedral coordination environment expected for 18 valence electron complexes with soft σ-donor π-acceptor ligands. Packing in the nickel complex is dominated by weak π-π stacking, C-H...;πphenyl, and C-H...;π interactions towards the isonitrile carbon and nitrogen atoms, and several slightly stronger C-H...;O interactions. In the copper complex the presence of the PF6 anion allows for the formation of stronger C-H...;F interactions, and these in combination with π-π stacking and C-H...;O hydrogen bonds dominate the packing.
A Mild Heteroatom (O -, N -, and S -) Methylation Protocol Using Trimethyl Phosphate (TMP)-Ca(OH) 2Combination
Tang, Yu,Yu, Biao
, (2022/03/27)
A mild heteroatom methylation protocol using trimethyl phosphate (TMP)-Ca(OH)2combination has been developed, which proceeds in DMF, or water, or under neat conditions, at 80 °C or at room temperature. A series of O-, N-, and S-nucleophiles, including phenols, sulfonamides, N-heterocycles, such as 9H-carbazole, indole derivatives, and 1,8-naphthalimide, and aryl/alkyl thiols, are suitable substrates for this protocol. The high efficiency, operational simplicity, scalability, cost-efficiency, and environmentally friendly nature of this protocol make it an attractive alternative to the conventional base-promoted heteroatom methylation procedures.
Palladium-catalyzed synthesis of nitriles from N-phthaloyl hydrazones
Ano, Yusuke,Chatani, Naoto,Higashino, Masaya,Yamada, Yuki
supporting information, p. 3799 - 3802 (2022/04/07)
The Pd-catalyzed transformation of N-phthaloyl hydrazones into nitriles involving the cleavage of an N-N bond is reported. The use of N-heterocyclic carbene as a ligand is essential for the success of the reaction. N-Phthaloyl hydrazones prepared from aromatic aldehydes or cyclobutanones are applicable to this transformation, which gives aryl or alkenyl nitriles, respectively.