Iodine(III)-Promoted Ring Contractive Cyanation of Exocyclic β-Enaminones for the Synthesis of Cyanocyclopentanones
作者:Dhananjay Bhattacherjee、Vandna Thakur、Saurabh Sharma、Sandeep Kumar、Richa Bharti、C. Bal Reddy、Pralay Das
DOI:10.1002/adsc.201601208
日期:2017.7.3
A highly efficient hypervalent iodine‐promoted regiocontrolled ring contractive cyanation (RCC) reaction of exocyclic β‐enaminones for the synthesis of cyanocyclopentanone (CCP) was demonstrated at ambient temperature with a wide substrate scope. The methodology offers a facile technique to construct an amino carbonitrile‐containing quaternary stereocenter at the α‐position of cyclopentanone in good
Domino reactions of cyclic enaminones leading to selective synthesis of pentacyclic indoles and its functionalization
作者:Wei Fan、Yan-Rong Li、Qun Li、Bo Jiang、Guigen Li
DOI:10.1016/j.tet.2016.06.058
日期:2016.8
established, providing selective protocol to pentacyclic indoles with different substituted patterns (up to 50 examples). Both substitutions on the cyclic enaminone ring and reaction temperatures showed obvious impact on the reaction pathways. For instance, selective allylic hydroxylation and allylic esterification of in situ generated indoles depend on reaction temperatures. With special substituents
Oligosaccharide Assisted Approach: An Efficient and Facile Access to Isochromeno [4,3-b] Indoles Derivatives in the Presence of Beta Cyclodextrin
作者:Akhilesh Kumar、Pragati Rai、Vijay B. Yadav、I. R. Siddiqui
DOI:10.1007/s10562-018-2592-0
日期:2019.1
A completely eco-friendly and straightforward protocol for the biologically important isochromeno[4,3-b]indoles derivatives has been developed employing beta cyclodextrin in aqueous medium. This documented strategy includes the elimination of hazardous catalysts and volatile organic solvents. Additionally this protocol highlights environmentally benign reaction conditions, short reaction times, operational
A highly regiospecific synthesis of a series of indenoindoles is reported, together with X-ray studies and their activity against human prostate cancer cells PC-3 and LNCaP in vitro. The most effective compound 7,7-dimethyl-5-[(3,4-dichlorophenyl)]-(4bRS,9bRS)-dihydroxy-4b,5,6,7,8,9bhexahydro-indeno[1,2-b]indole-9,10-dione 7q reduced the viability in both cell lines in a time and dose-dependent manner
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。