式R F CH 2 COCH 3(R F = n -C 3 F 7,n -C 4 F 9,n -C 6 F 13,n -C 8 F 17)的全氟烷基丙酮与氨以及伯和仲的相互作用胺已被研究。在所有情况下,亲核试剂都会先对起始的酮进行脱氟化氢,然后再用亲核试剂取代乙烯基氟原子,从而得到β-二羰基化合物R F C(NR 2)= CH-C(O)CH 3;它们的水解在温和条件下产生相应的β-二酮。全氟烷基丙酮与烷氧基钠反应,生成式R F C(OR)2 CH 2 COCH 3的化合物,其酸性水解作用还会生成β-二酮。
N → N acyl group migration in N-acylpyrazoles: Isomerization of 1,4-diacyl-5-methyl-1H-pyrazoles to 1,4-diacyl-3-methyl-1H-pyrazoles
作者:A. A. Petrov、V. V. Pakal’nis、A. V. Zerov、S. I. Yakimovich
DOI:10.1134/s1070428017030125
日期:2017.3
undergo isomerization to 1,4-diacyl-3-methyl-1H-pyrazoles via intermolecular N → N acylgroupmigration. 1,4,5-Trisubstituted pyrazoles obtained by reaction of 2-ethoxymethylidene derivatives of 1,3-diketones with 1,3-benzothiazol-2-ylhydrazine or phenylhydrazine failed to isomerize to 1,3,4-trisubstituted pyrazoles.
Regioselective synthesis of 4-alkyl- and 4-aryl-6-(perfluoroalkyl)salicylic acid derivatives by formal [3+3] cyclocondensation of 1,3-bis(silyloxy)-1,3-butadienes with 3-silyloxy-1-(perfluoroalkyl)prop-2-en-1-ones
4-Alkyl- and 4-aryl-6-(perfluoroalkyl)salicylic acid derivatives were regioselectively prepared by [3+3] cyclization of 1,3-bis(silylenolethers) with 3-silyloxy-1-(perfluoroalkyl)prop-2-en-1-ones.
Trialkyl borate assisted amination of fluorinated 1,3-diketones for synthesis of N,N′-1,2-phenylen-bis(β-aminoenones) and their Ni(II), Cu(II) and Pd(II) complexes
作者:Dmitrii L. Chizhov、Marina G. Pervova、Mariya A. Samorukova、Ekaterina F. Khmara、Vera I. Filyakova、Viktor I. Saloutin、Valery N. Charushin
DOI:10.1016/j.jfluchem.2011.03.018
日期:2011.6
method for fluorinated tridentate β-aminoenones and tetradentate bis(β-aminoenones) via amination of fluorinated 1,3-diketones with o-phenylenediamine in the presence of trialkyl borates was developed. Ni(II), Cu(II) and Pd(II) complexes with tetradentate bis(β-aminoenones) were obtained. Their gaschromatographic behaviour and main fragmentation paths in the electron ionization mass spectra were described
A Convenient Approach to 4,7-Dihydrotetrazolo [5,1-<b><i>c</i></b>][1,2,4]triazine Synthesis
作者:Evgeny V. Shchegol'kov、Anna E. Ivanova、Yanina V. Burgart、Viktor I. Saloutin
DOI:10.1002/jhet.1068
日期:2013.2
convenient one-step procedure for the synthesis of 4,7-dihydrotetrazolo[5,1-c][1,2,4]triazines. In contrast to nonfluorinated analogs, 7-hydroxy-7-polyfluoroalkyl-4,7-dihydrotetrazolo[5,1-c][1,2,4]triazines undergo a ring-chain isomerism resulting from the cleavage at the C7―N7a bond. A distinctive feature of nonfluorinated 4,7-dihydrotetrazolo[5,1-c][1,2,4]triazines is the possibility to dehydration,
Potassium and Cesium Fluorinated β-Diketonates: Effect of a Cation and Terminal Substituent on Structural and Thermal Properties
作者:Danil V. Kochelakov、Evgeniia S. Vikulova、Natalia V. Kuratieva、Ilya V. Korolkov
DOI:10.3390/molecules28155886
日期:——
potential precursors for the synthesis of fluoroperovskites, a family of heavyalkalimetal (MI = K, Cs) fluorinated β-diketonates were prepared and characterized by elemental analysis, IR, and powder-XRD. The crystal structures of the new six complexes, MI(β-dikF)(H2O)X, X = 0 or 1, were also determined. The structural diversity of this poorly explored class of complexes was discussed, including the