通过氟烷基化的1,3-二酮与乙二胺氢氯酸盐的直接相互作用制备了2,3-二氢-1 H -1,4-二氮杂pine;类似地,已经从氟化的1,3-酮酯获得了1,2,3,4-四氢-1,4-二氮杂-5-酮。在温和的条件下,发现氟化的1,3-二酮铜(II)和N(N)的铜(II)和N'-亚乙基双(氨基乙烯基酮)会与乙二胺反应生成含氟烷基的N,N' -亚乙基双(氨基乙烯基酮)和/或2,3-二氢-1 H -1,4-二氮杂s 。
Cyclocondensation of ethylenediamine with acetone and methyl ethyl ketone as a synthetic route to 14-membered azamacrocyclic compounds
摘要:
14-Membered azamacrocyclic compounds, substituted 1,4,8,11-tetraazacyclotetradeca-4,11-diene and 1,4,8,11-tetraazacyclotetradeca-4,14-diene containing azomethine cycle and amine nitrogen atoms, were obtained as a mixture of trans- and cis-isomers by reacting ethylenediamine with acetone and methyl ethyl ketone. More stable trans-isomers were isolated individually by vacuum distillation.
Self-assembly involving hydrogen bonds. Spectral properties and structure of supramolecular complexes of bis-aza-18-crown-6-containing dienones with alkanediammonium salts
作者:Marina V. Fomina、Nikolai A. Kurchavov、Alexandra Ya. Freidzon、Vyacheslav N. Nuriev、Artem I. Vedernikov、Yuri A. Strelenko、Sergey P. Gromov
DOI:10.1016/j.jphotochem.2020.112801
日期:2020.11
Dienones (ketocyanine dyes) containing two aza-18-crown-6 ether residues were synthesized. The complex formation of these dyes with the EtNH3+ and +H3N(CH2)nNH3+ ions (n = 2–10, 12) in MeCN was studied by electronic and 1H NMR spectroscopy, including spectrophotometric and 1H NMR titration. It was found that homoditopic bis-azacrown dienones and alkanediammonium ions with a short polymethylene chain
合成了包含两个aza-18-crown-6醚残基的二烯酮(酮菁染料)。 通过电子和1 H NMR光谱研究了这些染料与EtNH 3 +和+ H 3 N(CH 2)n NH 3 +离子(n = 2-10,12)的复合形成,包括分光光度法和11 H NMR滴定。发现同位双双氮杂双烯酮和具有短多亚甲基链的烷二铵离子形成1:1、2:2和1:2配合物,而具有长多亚甲基链的烷二铵离子仅形成伪环1:1配合物。确定了所得复合物的稳定性常数(log K 1:1在2.74至5.62 [M –1 ]范围内变化,log K 2:2 = 2.1 [M –1 ],log K 1:2在范围从2.03到2.96 [M –1 ])。由于两个NH 3 +的同时结合,最稳定的络合物是由具有长聚亚甲基链的二铵离子形成的基团连接到染料的氮杂皇冠醚残基。超分子配合物的结构通过量子化学计算得到证实。
Controlled self-assembly of bis(crown)stilbenes into unusual bis-sandwich complexes: structure and stereoselective [2+2] photocycloaddition
作者:Sergey P. Gromov、Artem I. Vedernikov、Natalia A. Lobova、Lyudmila G. Kuz'mina、Stepan S. Basok、Yuri A. Strelenko、Michael V. Alfimov、Judith A. K. Howard
DOI:10.1039/c0nj00780c
日期:——
shown by 1H NMR spectroscopy that symmetrical bis(crown)stilbenes (L) and small alkali and alkaline-earth metal cations form 1(L) ∶ 1(Mm+) and 1(L) ∶ 2(Mm+) complexes in MeCN solutions. In the case of large or hydrated metal cations such as Cs+, Rb+, K+, Ba2+, Sr2+, [Ca(H2O)x]2+ and stilbenes with a small crown-ether cavity as compared with the metal cation size, stable bis-sandwich complexes 2(L) ∶ 2(Mm+)
它是由示出1 H NMR光谱的是对称的双(冠)芪(L)和小碱金属和碱土金属阳离子形成1(L):1(M米+)和1(L):2(M米+)MeCN解决方案中的复合物。在较大或水合金属阳离子(例如Cs +,Rb +,K +,Ba 2 +,Sr 2 +,[Ca(H 2 O)x ] 2+)和丁苯醚中,冠醚空穴较小的情况下与金属阳离子的大小,稳定的双夹心络合物2(L):2(M m +)也可以形成。由双(18-冠-6)二苯乙烯与丙烷二铵离子也可制得稳定的双假夹心2:2络合物。阐明了冠醚大小,阳离子大小和性质对二苯乙烯光转化途径和产物组成的影响。双(假)三明治复合物经过有效的立体选择性[2 + 2]光环加成,主要生成新的1,2,3,4-四冠环丁烷的rctt异构体。通过X射线衍射证实了双(皇冠)对苯二甲酸酯和所获得的环丁烷的配合物的结构。
Cyclization of fluoroalkyl-containing 1,3-dicarbonyl compounds with ethylenediamine hydroperchlorate to 1,4-diazepines
作者:Z. �. Skryabina、Ya. V. Burgart、V. I. Saloutin
DOI:10.1007/bf00958575
日期:1991.4
2,3-Dihydro-1H-1,4-diazepines and 1,2,3,4-tetrahydro-1,4-diazepin-5-ones were obtained by direct condensation of fluorine-containing 1,3-diketones and 1,3-keto ethers, respectively, with ethylenediamine monohydroperchlorate. The structure of the compounds was confirmed by H-1 NMR, mass spectrometry and molecular weight determination.
Anion directed templated synthesis of mono- and di-condensed Schiff base compounds of Cu(II)
A mono-condensed Schiff base ligand has been prepared as the Cu(II) compound, [Cu-2(L-1)(2)(N-3)(2)]center dot 2H(2)O (1) (HL1 = 1-(N-3-methoxysalicylaldimine)-2-aminoethane), by the reaction of 1,2-diaminoethane, Cu(II) perchlorate and 3-methoxysalicyaldehyde in a 1:1:1 ratio in methanol, followed by the reaction with a large excess of NaN3. In absence of NaN3, a di-condensed compartmental ligand has been trapped as its Cu(II) compound [Cu-2(L-2)(2)subset of(H3NC2H4NH3)][CuL2)(2)subset of(H3NC2H4NH3)](ClO4)(4) (2) (H2L2 = N,N'-ethylene-bis(3-methoxysalicylaldimine). Both compounds were characterized by elemental analyses, spectral and electrochemical studies and single crystal X-ray diffraction. In compound 2, Cu(II) has a square planar coordination geometry, while in 1, Cu(II) exhibits a distorted square pyramidal geometry (Addison parameter (tau) = 0.116). [CuL1(py)](ClO4) (3) is produced by following the preparation method of compound 1, but replacing NaN3 with pyridine. Formation of the compounds has been explained by an anion directed template effect. (c) 2012 Elsevier Ltd. All rights reserved.