Results 71 to 80 of about 153,572 (317)

Key Mechanistic Features in Palladium-Catalyzed Methylcyclopropanation of Norbornenes With Vinyl Bromides: Insights From DFT Calculations

open access: yesFrontiers in Chemistry, 2019
DFT calculations were performed to elucidate mechanistic details of an unusual palladium-catalyzed methylcyclopropanation from [2 + 1] cycloadditions of (Z)-2-bromovinylbenzene and endo-N-(p-tolyl)-norbornenesuccinimide.
Fang Ying   +6 more
doaj   +1 more source

Development of a Novel Epoxide-Containing Trimethylenemethane Precursor for Palladium-Catalyzed Cycloadditions [PDF]

open access: yes, 2019
Pd(0)-catalyzed trimethylenemethane (TMM) cycloaddition reactions have been used extensively to generate disubstituted 5-membered rings with high levels of regioselectivity, chemoselectivity, and stereoselectivity.
Paterson, Mara
core   +2 more sources

Ferrocene-derived P,N ligands : synthesis and application in enantioselective catalysis [PDF]

open access: yes, 2013
Due to their unique steric and electronic properties, air-stability and modular structure, chiral hybrid P,N-ferrocenyl ligands play a prominent role in the field of asymmetric catalysis.
Noël, Timothy, Van der Eycken, Johan
core   +1 more source

An intramolecular cycloaddition

open access: yesTetrahedron Letters, 1977
Tetrahedron Letters 18 (1977) 3437-3440. doi:10.1016/S0040-4039(01)83260-3 ; Received by publisher: 1977-06-20 ; Harvest Date: 2016-01-04 12:20:50 ; DOI:10.1016/S0040-4039(01)83260-3 ; Page Range: 3437 ...
Department of Chemistry, University of Florida, Gainesville, Florida 32611 U.S.A. ( host institution )   +3 more
openaire   +3 more sources

Mechanochemistry for Metal–Organic Frameworks and Covalent–Organic Frameworks (MOFs, COFs): Methods, Materials, and Mechanisms

open access: yesAdvanced Materials, EarlyView.
An overview is provided of the mechanochemistry of metal‐organic frameworks (MOFs) and covalent‐organic frameworks (COFs), highlighting opportunities and strategies for discovery, synthesis and reactivity studies of these materials. Mechanistic studies and comparisons to the mechanochemistry of organic solids are outlined, showcasing how advances in ...
Joseph M. Marrett   +3 more
wiley   +1 more source

Synthesis and the Biological Activity of Phosphonylated 1,2,3-Triazolenaphthalimide Conjugates

open access: yesMolecules, 2016
A novel series of diethyl {4-[(5-substituted-1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)-methyl]-1H-1,2,3-triazol-1-yl}alkylphosphonates designed as analogues of amonafide was synthesized.
Iwona E. Głowacka   +6 more
doaj   +1 more source

Regioselective reactions of 3,4-pyridynes enabled by the aryne distortion model. [PDF]

open access: yes, 2013
The pyridine heterocycle continues to play a vital role in the development of human medicines. More than 100 currently marketed drugs contain this privileged unit, which remains highly sought after synthetically. We report an efficient means to access di-
Garg, Neil K, Goetz, Adam E
core  

Unusual structure-energy correlations in intramolecular Diels–Alder reaction transition states [PDF]

open access: yes, 2014
Detailed analysis of calculated data from an experimental/computational study of intramolecular furan Diels–Alder reactions has led to the unusual discovery that the mean contraction of the newly forming C-C σ-bonds from the transition state to the ...
Bebbington, Magnus   +3 more
core   +2 more sources

Cycloaddition Reactions of Heterophospholes

open access: yesChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Raj K. Bansal   +2 more
openaire   +3 more sources

Two Material Properties from One Wavelength‐Orthogonal Photoresin Enabled by a Monochromatic Laser Integrated Stereolithographic Apparatus (Mono LISA)

open access: yesAdvanced Materials, Volume 37, Issue 13, April 2, 2025.
A single object with dual properties – degradable and non‐degradable – is fabricated in a single print simply by switching the printing colors. The advanced multi‐material printing is enabled by the combination of a fully wavelength‐orthogonal photoresin and a monochromatic tunable laser printer, paving the way for precise multi‐material ...
Xingyu Wu   +5 more
wiley   +1 more source

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