Nano Fibrous Silica Sulphuric Acid as an Efficient Catalyst for the Synthesis of β-Enaminone
作者:Zeba N. Siddiqui、Kulsum Khan、Nayeem Ahmed
DOI:10.1007/s10562-013-1190-4
日期:2014.4
Synthesis of KCC-1 silica sulphuric acid as a new catalyst has been reported. The catalyst was characterized using XRD, SEM, TEM, BET, FT-IR, TGA-DTA, and EDX analysis. The catalytic activity was evaluated for the synthesis of enaminonesundersolvent-freeconditions. The catalyst was easily recovered and reused up to seven cycles with slight loss of activity. The attractive features of this protocol
FeCl<sub>3</sub>-Catalyzed Combinatorial Synthesis of Functionalized Spiro[Indolo-3,10′-indeno [1,2-<i>b</i>]quinolin]-trione Derivatives
作者:Animesh Mondal、Chhanda Mukhopadhyay
DOI:10.1021/acscombsci.5b00038
日期:2015.7.13
new spiro[indolo-3,10′-indeno [1,2-b]quinolin]-trione derivatives has been developed, involving three-component reaction of enaminones, N-substituted isatins and Indane-1,3-dione catalyzed by FeCl3. The approach to this spiro-heterocycle is noteworthy because it results in the formation of three new σ (two C–C and one C–N) bonds in a single operation, leading to the construction of novel spiro skeleton
已开发出一种高效,廉价,环保且高收率的锅法合成新的螺[indolo-3,10'-茚并[1,2- b ]喹啉]-三酮衍生物,涉及烯胺酮的三组分反应, FeCl 3催化N-取代的isatins和Indane-1,3-dione 。值得注意的是,这种螺旋杂环的方法会导致在一次操作中形成三个新的σ键(两个C–C和一个C–N),从而构造出新颖的螺旋骨架。该方法以优异的产量大规模工作。
The synthesis of new 8-imino-1-one acridine derivatives catalyzed by a calix[4]arene mono-acid core
作者:Piyali Sarkar、Chhanda Mukhopadhyay
DOI:10.1039/c6gc02144a
日期:——
Mono-acid incorporated calix[4]arene has been successfully established as the catalyst for the synthesis of 8-imino-1-one acridine derivatives obtained by the condensation of enaminoketones and aldehydes (2:1 ratio). In this paper,...
An acid-promoted multicomponent reaction for the direct C(sp3)N bond formation was achieved through intermolecular allylic amidation in a one-pot operation to synthesize 7-acetamido tetrahydroindole derivatives from simple and readily available arylglyoxal monohydrates, acetonitriles, and enamines of 5,5-dimethyl-1,3-cyclohexadione (dimedone) has been developed. Here acetonitrile acts both as solvent
Inorganic-organic hybrid chitosan-based Schiff base-Ni complex as a novel, highly efficient and recyclable heterogeneous catalyst for synthesis of pyrazolophthalazinediones
作者:Hossein Naeimi、Sepideh Lahouti
DOI:10.1002/aoc.3732
日期:2017.10
based on chitosan was synthesized through treatment of chitosan and p‐dimethylaminobenzaldehyde in methanol solution. This biopolymeric Schiff base was used to prepare a new first row transition metal complex of Ni(II). The biopolymeric Schiff base and the synthesized tetra‐coordinated complex were characterized using Fourier transform infrared, 1H NMR and 13C NMR techniques. Then, an efficient synthetic
通过在甲醇溶液中处理壳聚糖和对二甲基氨基苯甲醛合成了基于壳聚糖的席夫碱。这种生物聚合物席夫碱被用来制备新的第一行过渡金属镍(II)络合物。使用傅立叶变换红外光谱,1 H NMR和13 C NMR技术对生物聚合席夫碱和合成的四配位配合物进行表征。然后,一种有效的合成方法,用于功能化的1 H-吡唑并[1,2- b茚三酮和丙二腈与3-芳基氨基-5-5,5-二甲基-2-环己烯酮的一锅多米诺反应在Ni(II)的壳聚糖基席夫碱配合物的催化下成功开发了] phthalazine-5,10-diones。室内温度。该方案的优点是后处理简便,反应时间短,产物收率高,并且催化剂可以很容易地从反应混合物中分离出来并循环使用,而不会损失催化活性。