Iron‐Catalyzed One‐Step Synthesis of Isothiazolone/1,2‐Selenazolone Derivatives via [3+1+1] Annulation of Cyclopropenones, Anilines, and Elemental Chalcogens
作者:Hongchen Wang、Rulong Yan
DOI:10.1002/adsc.202101175
日期:2022.2.15
Described herein is the one-step synthesis of isothiazolone/1,2-selenazolone derivatives via [3+1+1] cycloaddition of cyclopropenone derivatives, anilines, and elemental chalcogens. The cascade reaction involves the C−S, C−N, and N−S bond formation along with the cleavage of C−C bond. Both anilines and cyclopropenones are tolerated and give the corresponding products in 28–73% yields.
Synthesis, characterization, and oxidation electrochemistry of some novel 1,2-dithiol-3-ones and 1,2-dithiol-3-thiones containing aryl and metallocenyl fragments
作者:Jessica J. Sánchez García、Rene S. Joo-Cisneros、David García-Bassoco、Marcos Flores-Alamo、José M. Méndez Stivalet、Jesús García-Valdés、Elena I. Klimova
DOI:10.1016/j.jorganchem.2021.121809
日期:2021.7
A new synthesis method was established for 1,2-dithiol-3-ones and 1,2-dithiol-3-thiones, from different cyclopropenones: diphenyl (a), bis-(4-methoxyphenyl (b), diferrocenyl (c) and diruthenocenyl (d), in the presence of elemental sulfur with yields of the 5a-d (35-57%), or in the presence of the additive NaHS, with yields of the 5a-d (45-72%) and 6a-d (10-18%). The characterization of the new compounds
建立了一种新的合成方法,用于合成来自不同环丙烯的1,2-二硫醇-3-酮和1,2-二硫醇-3-硫酮:二苯基(a),双-(4-甲氧基苯基(b),二铁茂铁(c)和diruthenocenyl(d),在元素硫的存在下与所述的收率图5a-d(35-57%),或在添加剂硫氢化钠的存在下,与所述的收率图5a-d(45-72%)和6a中-d(10-18%)。通过IR,1 H和13 C NMR光谱,元素分析,质谱对新化合物进行表征,此外,对化合物5a,b, d进行了。使用循环(CV),微分脉冲(DPV)和方波(SWV)伏安法研究了杂环化合物的氧化还原特性。
Formation of 2,5-diaryl-1,3-dithiolylium-4-olate in thermal reaction of 4-aryl-1,3,2-oxathiazolylium-5-olate
The reflux of a meso-ioniccompound, 4-aryl-1,3,2-oxathiazolylium-5-olate(1), in toluene, chlorobenzene, or xylene gives another meso-ioniccompound, 2,5-diaryl-1,3-dithiolylium-4-olate(2), by a radical mechanism.