The preparation of exocyclic functionalised alkylidenecycloproparanes via a new procedure

McNichols, Aileen T.; Stang, Peter J.; Addington, Diana M.; Halton, Brian

doi:10.1016/0040-4039(94)85074-7

Cited by 13 publications

(11 citation statements)

References 15 publications

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“…We have reported an unprecedented palladium‐catalyzed addition of 1,3‐diones to ynamides. This gives rise to α alkoxy‐substituted enamides which, to the best of our knowledge, have not been described thus far 21. This transformation was found to be compatible with acidic 1,3‐diones (p K a ≤5) and most of the ynamides we have tested.…”

Section: Methodssupporting

confidence: 63%

AlF₃ Surface‐Coated Li[Li_0.2Ni_0.17Co_0.07Mn_0.56]O₂ Nanoparticles with Superior Electrochemical Performance for Lithium‐Ion Batteries

et al. 2015

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Li-rich layered cathode materials have already drawn considerable attention owing to their high capacity performance for Li-ion batteries (LIBs). In this work, layered Li-rich Li[Li0.2 Ni0.17 Co0.07 Mn0.56 ]O2 nanoparticles are surface-modified with AlF3 through a facile chemical deposition method. The AlF3 surface layers have little impact on the structure of the material and act as buffers to prevent the direct contact of the electrode with the electrolyte; thus, they enhance the electrochemical performance significantly. The 3 wt % AlF3 -coated Li-rich electrode exhibits the best cycling capability and has a considerably enhanced capacity retention of 83.1 % after 50 cycles. Moreover, the rate performance and thermal stability of the 3 wt % AlF3 -coated electrode are also clearly improved. Surface analysis indicates that the AlF3 coating layer can largely suppress the undesirable growth of solid electrolyte interphase (SEI) film and, therefore, stabilizes the structure upon cycling.

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Section: Methodssupporting

confidence: 63%

AlF₃ Surface‐Coated Li[Li_0.2Ni_0.17Co_0.07Mn_0.56]O₂ Nanoparticles with Superior Electrochemical Performance for Lithium‐Ion Batteries

et al. 2015

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“…2.24-26 More recently, it has been found that acylation of the r-silyl anion 10 gives a l-acyl-ltrimethylsilyl derivative 11 that can subsequently interact with a nucleophile and provide an alkylidene derivative in a complementary pathway (path 6, Scheme 2). 26 The scope and limitations of this route have yet to be established. Theoretical studies 3 3 of the unknown parent 13 lead to the expectation of an enhancement in the stability of the molecule because of charge separation.…”

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confidence: 99%

Studies in the cycloproparene series; heterocyclic substituted methylidenecyclopropa[b]naphthalenes

Halton¹,

Cooney²,

Davey³

et al. 1995

J. Chem. Soc., Perkin Trans. 1

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“…In summary, we reported an unprecedented palladiumcatalyzed addition of 1,3-diones to ynamides giving rise to alkoxy-substituted enamides which, to the best of our knowledge, hadnot been described so far. [21] This transformation was found to be compatible with acidic 1,3diones (pka ≤ 5) and most of the ynamides we have been tested. In a general manner, reactions proceeded smoothly at room temperature -for internal ynamides a heating at 80 °C is required -and gave high yields.…”

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confidence: 53%

Palladium‐Catalyzed Addition of 1,3‐Diones to Ynamides: An Entry to Alkoxy‐Substituted Enamides

2014

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International audienceA new metal-catalyzed addition reaction of 1,3-diketones to ynamides, which provides access to unprecedented alkoxy- substituted enamides, is disclosed herein. A screening of cata- lytic systems showed that both a phosphapalladacycle and a cationic gold complex were capable of promoting this reac- tion rapidly and cleanly. The scope investigation revealed that variously substituted terminal ynamides and cyclic 1,3-diones were well tolerated. The use of internal ynamides led to the formation of both E and Z isomers with low to good selectivi- ties. The proposed mechanism suggests that the phosphapalla- dacycle acts as a p Lewis acid to activate the ynamide

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The preparation of exocyclic functionalised alkylidenecycloproparanes via a new procedure

Cited by 13 publications

References 15 publications

AlF₃ Surface‐Coated Li[Li_0.2Ni_0.17Co_0.07Mn_0.56]O₂ Nanoparticles with Superior Electrochemical Performance for Lithium‐Ion Batteries

AlF₃ Surface‐Coated Li[Li_0.2Ni_0.17Co_0.07Mn_0.56]O₂ Nanoparticles with Superior Electrochemical Performance for Lithium‐Ion Batteries

Studies in the cycloproparene series; heterocyclic substituted methylidenecyclopropa[b]naphthalenes

Palladium‐Catalyzed Addition of 1,3‐Diones to Ynamides: An Entry to Alkoxy‐Substituted Enamides

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The preparation of exocyclic functionalised alkylidenecycloproparanes via a new procedure

Cited by 13 publications

References 15 publications

AlF3 Surface‐Coated Li[Li0.2Ni0.17Co0.07Mn0.56]O2 Nanoparticles with Superior Electrochemical Performance for Lithium‐Ion Batteries

AlF3 Surface‐Coated Li[Li0.2Ni0.17Co0.07Mn0.56]O2 Nanoparticles with Superior Electrochemical Performance for Lithium‐Ion Batteries

Studies in the cycloproparene series; heterocyclic substituted methylidenecyclopropa[b]naphthalenes

Palladium‐Catalyzed Addition of 1,3‐Diones to Ynamides: An Entry to Alkoxy‐Substituted Enamides

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Product

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AlF₃ Surface‐Coated Li[Li_0.2Ni_0.17Co_0.07Mn_0.56]O₂ Nanoparticles with Superior Electrochemical Performance for Lithium‐Ion Batteries

AlF₃ Surface‐Coated Li[Li_0.2Ni_0.17Co_0.07Mn_0.56]O₂ Nanoparticles with Superior Electrochemical Performance for Lithium‐Ion Batteries