Synthesis of triphenylphosphanylidene cyclopent-2-enecaroboxylates with three-component reaction of triphenylphospine, hex-2-en-4-ynedioate, and ß-nitrostyrene
摘要:
The three-component reaction of triphenylphosphine, hex-2-en-4-ynedioate, and beta-nitrostyrene in methylene dichloride at room temperature afforded triphenylphosphanylidene cyclopent-2-enecaroboxylates in good yields and high diastereoselectivity. (C) 2015 Elsevier Ltd. All rights reserved.
Synthesis of Naphthalenes through Three-Component Coupling of Alkynes, Fischer Carbene Complexes, and Benzaldehyde Hydrazones via Isoindole Intermediates
作者:Shaofeng Duan、Dilip K. Sinha-Mahapatra, and、James W. Herndon
DOI:10.1021/ol800242n
日期:2008.4.1
The synthesis of naphthalene derivatives through three-component coupling of 2-alkynylbenzaldehyde hydrazones with carbene complexes and electron-deficient alkynes has been examined. The reaction involves formation of an isoindole derivative, followed by intramolecular Diels-Alder reaction, followed by nitrene extrusion. The reaction was highly regioselective using unsymmetrical alkynes.
Multicomponent reactions of phosphines, enynedioates and benzylidene malononitriles generated highly substituted cyclopentenes through an unexpected phosphine α-addition-δ-evolvement of an anion pathway
Multicomponent reactions of phosphines, enynedioates and benzylidene malononitriles provide highly substituted syn-selective cyclopentenes appending the phosphorus ylide moiety in good yield with a diastereoselectivity of up to 100% through resonance-derived 1,5-dipolar species as the key intermediates, via the nucleophilic α(δ′)-attack of phosphines toward enynedioates followed by addition to benzylidene
Multicomponent Reactions of Phosphines, Enynedioates and Cinnamaldimines Give γ-Lactams with a 1,3,5-Hexatriene Moiety for Facile 6π Electrocyclization: Access to Oxindoles, Isatins and Isoxazolinones
Multicomponentreactions of phosphines, enynedioates and cinnamaldimines generated 3‐phosphorus ylide γ‐lactams having a 1,3,5‐hexatriene moiety with low activation energy barrier for 6π electrocyclization, through initial formation of 1,3‐dipoles from the α(δ′)‐Michael addition of phosphines to enynedioates. The reactive 1,3‐dipoles underwent addition to cinnamaldimines, lactamization, 6π electrocyclization
Convenient synthesis of the functionalized 1′,3′-dihydrospiro[cyclopentane-1,2′-inden]-2-enes via a three-component reaction
作者:Chang-Zhou Liu、Ying Han、Wen-Jie Qi、Chao-Guo Yan
DOI:10.1515/hc-2016-0123
日期:2016.10.1
three-component reaction of triphenylphosphine, dialkyl hex-2-en-4-ynedioate and arylidene-1,3-indanedione in dry DME at room temperature furnishes functionalized triphenylphosphanylidene-substituted 1′,3′-dihydrospiro[cyclopentane-1,2′-inden]-2-enes in 75–92% yields. 1H NMR spectra and X-ray diffraction analysis indicate that the trans-isomer is predominately formed and the reaction has very high
Convenient Synthesis of Triphenylphosphanylidene Spiro[cyclopentane-1,3′-indolines] and Spiro[cyclopent[2]ene-1,3′-indolines] via Three-Component Reactions
作者:Ying Han、Yin-Jian Sheng、Chao-Guo Yan
DOI:10.1021/ol5008394
日期:2014.5.16
Three-componentreactions of triphenylphosphine, but-2-ynedioate, and isatylidene malononitrile (ethyl cyanoacetate) in dimethoxyethane resulted in triphenylphosphanylidenespiro[cyclopentane-1,3′-indolines] in satisfactory yields. Furthermore, similar three-componentreactions of triphenylphosphine, hex-2-en-4-ynedioate, and isatylidene malononitrile (ethyl cyanoacetate) afforded functionalized s