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
An Efficient Synthesis of Pyrroline-Fused Acridine Derivatives Catalyzed by Silica Sulfuric Acid
作者:Ming-Hua Hu、Wei Lin、Cheng-Pao Cao、Zhi-Bin Huang、Da-Qing Shi
DOI:10.1002/jhet.2023
日期:2014.8
A simple and efficientsynthesis of pyrrolo[2,3,4-kl]acridine-1-one derivatives via the cascade reaction of isatins with enaminones catalyzed by silicasulfuricacid (SSA) has been established. In this reactions, SSA shows a highly catalytic nature: easy to handle procedure, short reaction time, recycle exploitation, insensitivity to air and moisture, and excellent isolated yields. The catalyst could
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,...
Synthesis and anticonvulsant activity of enaminones Part 7. Synthesis and anticonvulsant evaluation of ethyl 4-[(substituted phenyl)amino]-6-methyl-2-oxocyclohex-3-ene-1-carboxylates and their corresponding 5-methylcyclohex-2-enone derivatives
作者:N Eddington
DOI:10.1016/s0223-5234(02)00006-5
日期:2003.1
corresponding to a sequence of active and inactive esters were synthesised and evaluated for anticonvulsant activity. With two exceptions, ethyl 4-[(4-cyanophenyl)amino]-6-methyl-2-oxocyclohex-3-ene-1-carboxylate (1k), and 3-[N-(4-cyanophenyl)amino]-5-methyl-2-cyclohexenone (3g), and ethyl 4-(phenylamino)-6-methyl-2-cyclohexenone (1n), and 3-N-(phenylamino)-5-methyl-2-cyclohexenone (3j), anticonvulsant screening
Phase-transfer catalyzed Michael/ammonolysis cascade reactions of enaminones and olefinic azlactones: a new approach to structurally diverse quinoline-2,5-diones
作者:Lin Chen、Wei Liang
DOI:10.1039/d2ob00096b
日期:——
Michael/ammonolysis cascade reactions between cyclohexane-1,3-dione-derived enaminones and olefinic azlactones via phase-transfer catalysis have been developed. This method provides rapid access to a suite of architecturally complex and diverse quinoline-2,5-diones bearing a secondary amide group at the C-3 position in moderate to excellent yields (53–94%) and with excellent diastereoselectivities