A series of Se-aryl carboselenothioates 3 (RCSSeAr, R=alkyl, aryl) were synthesized and characterized from the reaction of bis(thioacyl) sulfides 1 with sodium areneselenolates. The thionselenolesters 3 are stable (liquid or crystals) both thermally and to moisture. Reactions of 3 with aliphatic primary and secondary amines gave the corresponding ammonium carbodithioates 8 together with diphenyl diselenide
Reaction of p-tolualdehyde hydrazone with disulfur dichloride in the presence of DBU gave 2,5-di (p-tolyl)-1,3,4-thiadiazole (1a) in 54% yield. Phenyldiazomethane also reacted with disulfur dichloride to afford 2,5-diphenyl-1,3,4-thiadiazole (1b) in 80% yield.
Modification of organic compounds with Lawesson’s reagent
作者:L. A. Kayukova、K. D. Praliyev、V. G. Gut’yar、G. P. Baitursynova
DOI:10.1134/s1070428015020025
日期:2015.2
Application in organic synthesis of Lawesson’s reagent, 2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide, provides a possibility to replace an oxygen atom for a sulfur atom in the carbonyl group of ketones, esters, amides, in ether group, and also either to induce a rearrangement of the initial structure of organic compounds with or without inclusion of sulfur atoms or to lead to
Über eine neue Synthese zur darstellung heterocyclisch substituierter Stilbenverbindungen, die Anil-Sythese
作者:A. E. Siegrist
DOI:10.1002/hlca.19670500318
日期:1967.4.20
Heterocyclische Ringsysteme aromatischen Charakters mit mindestens einem Ring-Stickstoffatom, die eine oder mehrere p-Tolylgruppen oder in einem an den Heterocyclus ankondensierten Benzolring eine Methylgruppe in p-Stellung zu einer CN-oder NC-Gruppe des Heterocyclus enthalten, können in Dimethylformamid in Gegenwart von Kaliumhydroxid oder Kalium-t-butylat mit aromatischen Aldehydanilen zu heterocyclisch
One pot solvent-free solid state synthesis, photophysical properties and crystal structure of substituted azole derivatives
作者:Yanting Du、Zilu Wan、Lianqing Chen、Lamei Wu
DOI:10.1016/j.molstruc.2018.12.095
日期:2019.10
elemental analysis and MS. The structure of 2,5-di (4-tertbutylphenyl)-1,3,4-oxadiazole has been determined by single crystal X-ray diffraction analysis. The cell parameters are as follows: monoclinic crystal system, Cc space group, a = 18.735 (2) A, b = 6.3375 (8) A, c = 16.824 (2) A and α = γ = 90°; β = 98.292 (2). The electronic absorption and fluorescent properties of these compounds have been systematically
摘要 开发了一种无溶剂固相法,通过缩合反应以高收率合成了三个系列的取代唑衍生物(包括1,3,4-恶二唑、1,3,4-噻二唑和1,2,4-三唑)。 N,N'-二酰肼衍生物分别与相应的环化剂环化。这种通用方法避免了有机溶剂的使用,节省了成本和资源,简化了后处理并提高了反应速率。这些化合物已通过 1H NMR、13C NMR、元素分析和 MS 进行了充分表征。2,5-二(4-叔丁基苯基)-1,3,4-恶二唑的结构已通过单晶 X 射线衍射分析确定。晶胞参数如下:单斜晶系,Cc空间群,a=18.735(2)A,b=6.3375(8)A,c=16.824(2)A,α=γ=90°;β = 98.292 (2)。首次系统地研究了这些化合物的电子吸收和荧光特性。杂环结构与光物理性质之间的关系已经讨论过。混合原子的电负性和取代基的哈米特常数可以阐明发射和吸收波长的变化。这种方法提出了一种新的见解,通过一般的绿