Reactions of 1-Allenylpyrazole and 1-Allenyl-1,2,4-triazole with Hydrogen Chloride and Metal Chlorides
作者:L. V. Baikalova、I. A. Zyryanova、O. A. Tarasova、N. N. Chipanina、E. Yu. Shmidt、T. V. Kashik、A. V. Afonin、L. M. Sinegovskaya、A. V. Vashchenko、B. A. Trofimov
DOI:10.1023/b:rugc.0000016037.49275.d5
日期:2003.10
1-Allenylpyrazole and 1-allenyl-1,2,4-triazole react with hydrogen chloride via proton addition at the pyridine-like nitrogen atom (N-2 and N-4, respectively). In the reaction with 1-allenylpyrazole, 1-[(E)-3chloro-1-propenyl]pyrazole is also formed via regio- and stereoselective addition of hydrogen chloride to the propadienyl group. 1-Allenylpyrazole and 1-allenyl-1,2,4-triazole act as unidentate ligands with respect to Co, Ni, Cu, Zn, Cd, Pd, and Sn, the donor centers being N-2 and N-4, respectively. Apart from mononuclear coordination compounds, 1-allenylpyrazole gives rise to polymeric complexes which contain units and blocks, formed by the free ligand.