在本工作中,报道了甲苯磺酸盐,芳基醛和硫代氨基脲的新型一锅多组分反应,用于使用衍生自生锈的铁的Fe 2 O 3 NPs催化合成肼基噻唑。用XRD,SEM,VSM,HR-TEM,EDX和FT-IR技术对Fe 2 O 3 NPs进行了表征。通过1 H NMR,13 C NMR,FT-IR和质谱确认所有合成的肼基噻唑衍生物的结构。磁性Fe 2 O 3使用外磁体可以轻松地从反应中回收NP,并在优化的反应条件下经过四个循环检查了回收的催化剂的催化活性。它表现出最小的产量损失。为了探索潜在的应用,对合成分子的抗菌,抗真菌和抗氧化活性进行了研究,并显示出令人鼓舞的结果。分子对接研究进一步支持了该结果。
One-Pot Protocol for Synthesis of<font>α</font>-Organosulfonyloxy Ketones from Secondary Alcohols Using Hypervalent Iodine(V)–Mediated Oxidations
作者:Swapnil S. Deshmukh、Sameerana N. Huddar、Krishnacharya G. Akamanchi
DOI:10.1080/00397910902730952
日期:2009.7.29
Abstract α-Tosyloxy ketones and α-mesyloxy ketones were directly prepared from alcohols in one pot by treatment with hypervalentiodine(V) reagents in combination with p-toluenesulfonic acid and methanesulfonic acid, respectively, in moderate to good yields. Reactions were also feasible under solvent-free conditions.
Hypervalent-iodine-mediated oxidation followed by the acetoxylation/tosylation of α-substituted benzylamines to obtain α-acyloxy/tosyloxy ketones
作者:Bapurao D. Rupanawar、Kishor D. Mane、Gurunath Suryavanshi
DOI:10.1039/d2nj02271k
日期:——
An efficient and metal-free method has been developed for the sequential oxidation of α-alkylbenzylamines followed by acetoxylation or tosylation for the synthesis of α-acyloxy/tosyloxy ketones using hypervalent iodine(III). The employment of a simple starting material, broad substrate scope and operational simplicity are the key features of this protocol.
已经开发了一种高效且无金属的方法,用于顺序氧化 α-烷基苄胺,然后使用高价碘 ( III ) 进行乙酰氧基化或甲苯磺酰化合成 α-酰氧基/甲苯磺酰氧基酮。使用简单的起始材料、广泛的底物范围和操作简单是该协议的主要特点。
A New Application of Hypervalent Iodine (λ<sup>5</sup>) Reagents with Organosulfonic Acids for Direct α-Organosulfonyloxylation Carbonyl Compounds
作者:Krishnacharya Akamanchi、Ulhas Mahajan
DOI:10.1055/s-2008-1072508
日期:——
Hypervalent iodine (λ 5 ) reagents in combination with P-toluenesulfonic acid when reacted with ketones under reflux temperature in acetonitrile gave α-tosyloxy ketones in moderate to excellent yields. The reaction was developed further for both ketones and dicarbonyl compounds using Dess-Martin periodinane reagent in combination with P-toluenesulfonic acid and methanesulfonic acid, to give mono-α-tosyloxy
the present work, novel one-potmulticomponent reactions of tosylates, aryl aldehydes and thiosemicarbazide are reported for the synthesis of hydrazinyl thiazoles, using Fe2O3 NPs derived from rusted iron as a catalyst. The Fe2O3 NPs were characterized using XRD, SEM, VSM, HR-TEM, EDX and FT-IR techniques. The structures of all of the synthesized hydrazinyl thiazole derivatives were confirmed by 1H NMR
在本工作中,报道了甲苯磺酸盐,芳基醛和硫代氨基脲的新型一锅多组分反应,用于使用衍生自生锈的铁的Fe 2 O 3 NPs催化合成肼基噻唑。用XRD,SEM,VSM,HR-TEM,EDX和FT-IR技术对Fe 2 O 3 NPs进行了表征。通过1 H NMR,13 C NMR,FT-IR和质谱确认所有合成的肼基噻唑衍生物的结构。磁性Fe 2 O 3使用外磁体可以轻松地从反应中回收NP,并在优化的反应条件下经过四个循环检查了回收的催化剂的催化活性。它表现出最小的产量损失。为了探索潜在的应用,对合成分子的抗菌,抗真菌和抗氧化活性进行了研究,并显示出令人鼓舞的结果。分子对接研究进一步支持了该结果。