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
Three-Component Domino Reactions for Regioselective Formation of Bis-indole Derivatives
作者:Li-Ping Fu、Qing-Qing Shi、Yu Shi、Bo Jiang、Shu-Jiang Tu
DOI:10.1021/co3001428
日期:2013.2.11
A microwave-assisted regioselective reaction dealing with arylglyoxal monohydrate, diverse N-aryl enaminones, and indoles to achieve 3,2′- and 3,3′-bis-indoles by varying a substituted indole substrate is reported. The 2-unsubstituted indoles resulted in the 3,2′-bis-indole skeleton, whereas indoles bearing a methyl or phenyl group at C2 led to the 3,3′-bis-indoles with simultaneous formation of three
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
A variety of functionalized N-alkylated carbazolones were prepared via N-alkylation of 3-(arylamino)cyclohex-2-enones followed by an intramolecular oxidative coupling mediated by Pd(OAc)2 under an oxygen atmosphere. This approach adopts an inverted sequence, consisting of the conventional annulation and subsequent N-alkylation.