A New Look at the Ylidic Bond in Phosphorus Ylides and Related Compounds:  Energy Decomposition Analysis Combined with a Domain-Averaged Fermi Hole Analysis

2007 ◽  
Vol 111 (15) ◽  
pp. 2859-2869 ◽  
Author(s):  
Maria José Calhorda ◽  
Andreas Krapp ◽  
Gernot Frenking
2020 ◽  
Author(s):  
Taeho Kang ◽  
Tuğçe Erbay ◽  
Kane Xu ◽  
Gary Gallego ◽  
Alexander Burtea ◽  
...  

A unified synthetic strategy to access tertiary four-membered carbo/heterocyclic boronic esters is reported. Use of a Cu(I) catalyst in combination with a modified dppbz ligand enables regioselective hydroboration of various substituted benzylidenecyclobutanes and carbo/heterocyclic analogs. The reaction conditions are mild, and the method tolerates a wide range of medicinally relevant heteroarenes. The protocol can be conveniently conducted on gram-scale, and the tertiary boronic ester products undergo facile diversification into valuable targets. Reaction kinetics and computational studies indicate that the migratory insertion step is turnover-limiting and accelerated by electron-withdrawing groups on the dppbz ligand. Energy decomposition analysis (EDA) calculations reveal that electron-deficient <i>P</i>-aryl groups on the dppbz ligand enhance the T-shaped π/π interactions with the substrate and stabilize the migratory insertion transition state.


2020 ◽  
Vol 11 (15) ◽  
pp. 3769-3779 ◽  
Author(s):  
Israel Fernández

This perspective article summarizes recent applications of the combined activation strain model of reactivity and the energy decomposition analysis methods to the study of the reactivity of polycyclic aromatic hydrocarbons and related compounds.


2020 ◽  
Author(s):  
Taeho Kang ◽  
Tuğçe Erbay ◽  
Kane Xu ◽  
Gary Gallego ◽  
Alexander Burtea ◽  
...  

A unified synthetic strategy to access tertiary four-membered carbo/heterocyclic boronic esters is reported. Use of a Cu(I) catalyst in combination with a modified dppbz ligand enables regioselective hydroboration of various substituted benzylidenecyclobutanes and carbo/heterocyclic analogs. The reaction conditions are mild, and the method tolerates a wide range of medicinally relevant heteroarenes. The protocol can be conveniently conducted on gram-scale, and the tertiary boronic ester products undergo facile diversification into valuable targets. Reaction kinetics and computational studies indicate that the migratory insertion step is turnover-limiting and accelerated by electron-withdrawing groups on the dppbz ligand. Energy decomposition analysis (EDA) calculations reveal that electron-deficient <i>P</i>-aryl groups on the dppbz ligand enhance the T-shaped π/π interactions with the substrate and stabilize the migratory insertion transition state.


2015 ◽  
Vol 11 ◽  
pp. 2727-2736 ◽  
Author(s):  
Diego M Andrada ◽  
Nicole Holzmann ◽  
Thomas Hamadi ◽  
Gernot Frenking

Fifteen cyclic and acylic carbenes have been calculated with density functional theory at the BP86/def2-TZVPP level. The strength of the internal X→p(π) π-donation of heteroatoms and carbon which are bonded to the C(II) atom is estimated with the help of NBO calculations and with an energy decomposition analysis. The investigated molecules include N-heterocyclic carbenes (NHCs), the cyclic alkyl(amino)carbene (cAAC), mesoionic carbenes and ylide-stabilized carbenes. The bonding analysis suggests that the carbene centre in cAAC and in diamidocarbene have the weakest X→p(π) π-donation while mesoionic carbenes possess the strongest π-donation.


2021 ◽  
Vol 23 (36) ◽  
pp. 20533-20540
Author(s):  
Gustavo Cárdenas ◽  
Álvaro Pérez-Barcia ◽  
Marcos Mandado ◽  
Juan J. Nogueira

The interactions that control the permeation of cisplatin through a DOPC bilayer are unveiled by a QM/MM EDA scheme.


Author(s):  
Zhen Tang ◽  
Yanlin Song ◽  
Shu Zhang ◽  
Wei Wang ◽  
Yuan Xu ◽  
...  

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