Innentitelbild: Magnesium-Mediated Benzothiazole Activation: A Room-Temperature Cascade of CH Deprotonation, CC Coupling, Ring-Opening, and Nucleophilic Addition Reactions (Angew. Chem. 42/2011)

2011 ◽  
Vol 123 (42) ◽  
pp. 9934-9934
Author(s):  
Victoria L. Blair ◽  
William Clegg ◽  
Alan R. Kennedy ◽  
Zoe Livingstone ◽  
Luca Russo ◽  
...  
Keyword(s):  
Nucleophilic Addition ◽  
Ring Opening ◽  
Room Temperature ◽  
Addition Reactions

Magnesium-Mediated Benzothiazole Activation: A Room-Temperature Cascade of CH Deprotonation, CC Coupling, Ring-Opening, and Nucleophilic Addition Reactions

2011 ◽  
Vol 50 (42) ◽  
pp. 9857-9860 ◽  
Author(s):  
Victoria L. Blair ◽  
William Clegg ◽  
Alan R. Kennedy ◽  
Zoe Livingstone ◽  
Luca Russo ◽  
...  
Keyword(s):  
Nucleophilic Addition ◽  
Ring Opening ◽  
Room Temperature ◽  
Addition Reactions

Magnesium-Mediated Benzothiazole Activation: A Room-Temperature Cascade of CH Deprotonation, CC Coupling, Ring-Opening, and Nucleophilic Addition Reactions

2011 ◽  
Vol 123 (42) ◽  
pp. 10031-10034 ◽  
Author(s):  
Victoria L. Blair ◽  
William Clegg ◽  
Alan R. Kennedy ◽  
Zoe Livingstone ◽  
Luca Russo ◽  
...  
Keyword(s):  
Nucleophilic Addition ◽  
Ring Opening ◽  
Room Temperature ◽  
Addition Reactions

scholarly journals Copper-Catalyzed One-Pot Synthesis of N-Sulfonyl Amidines from Sulfonyl Hydrazine, Terminal Alkynes and Sulfonyl Azides

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3700
Author(s):  
Yu Zhao ◽  
Zitong Zhou ◽  
Man Chen ◽  
Weiguang Yang
Keyword(s):  
Nucleophilic Addition ◽  
Ring Opening ◽  
Room Temperature ◽  
Terminal Alkynes ◽  
One Pot ◽  
One Pot Synthesis ◽  
Three Component Reaction ◽  
Sulfonyl Azides ◽  
The Stability

N-Sulfonyl amidines are developed from a Cu-catalyzed three-component reaction from sulfonyl hydrazines, terminal alkynes and sulfonyl azides in toluene at room temperature. Particularly, the intermediate N-sulfonylketenimines was generated via a CuAAC/ring-opening procedure and took a nucleophilic addition with the weak nucleophile sulfonyl hydrazines. In addition, the stability of the product was tested by a HNMR spectrometer.

Oxidative addition reactions of benzo[b]thiophene and dibenzothiophene with [Os3(CO)10(MeCN)2]: room-temperature ring opening of benzo[b]thiophene at triosmium clusters

1999 ◽  
Vol 285 (2) ◽  
pp. 277-282 ◽  
Author(s):  
Alejandro J. Arce ◽  
Arquı́medes Karam ◽  
Ysaura De Sanctis ◽  
Mario V. Capparelli ◽  
Antony J. Deeming
Keyword(s):  
Ring Opening ◽  
Room Temperature ◽  
Oxidative Addition ◽  
Addition Reactions ◽  
Triosmium Clusters

scholarly journals Theoretical study on the nucleophilic fluoroalkylation of propylene oxide with fluorinated sulfones

2013 ◽  
Vol 78 (4) ◽  
pp. 483-494
Author(s):  
Ling-Li Han ◽  
Tao Liu
Keyword(s):  
Gas Phase ◽  
Propylene Oxide ◽  
Nucleophilic Addition ◽  
Ring Opening ◽  
Theoretical Study ◽  
Addition Reactions ◽  
Ring Opening Reaction ◽  
Reactivity Order ◽  
Better Than ◽  
Good Agreement

The path of nucleophilic fluoroalkylation reaction of propylene oxide with PhSO2CYF- (Y=F,H, and PhSO2, respectively) in gas phase and in Et2O solvent were studied theoretically. The nucleophilic fluoroalkylation of propylene oxide with fluorinated carbanions was probed by the reactivity comparison between (benzenesulfonyl)monofluoromethyl anion (PhSO2CHF-), (benzenesulfonyl) difluoromethyl anion (PhSO2CF2-), and bis(benzenesul-fonyl) monofluoromethyl anion ((PhSO2)2CF-). The nucleophilicity reactivity order of PhSO2CYF- (Y = F, H, and PhSO2) is [(PhSO2)2CF-] > PhSO2CHF- > PhSO2CF2-, which indicates that introducing another electron-withdrawing benzenesulfonyl group is an effective way to significantly increase the nucleophilicity of the fluorinate carbanions. For comparison, we also studied the nucleophilic addition reactions of propylene oxide with chlorine substituted carbanion PhSO2CHCl-. The calculated results show that the nucleophilicity of PhSO2CYF- is better than that of PhSO2CHCl- for the ring opening reaction with propylene oxide. The calculated results are in good agreement with the available experiments.

scholarly journals Synthesis of Network Polymers by Means of Addition Reactions of Multifunctional-Amine and Poly(ethylene glycol) Diglycidyl Ether or Diacrylate Compounds

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2047
Author(s):  
Naofumi Naga ◽  
Mitsusuke Sato ◽  
Kensuke Mori ◽  
Hassan Nageh ◽  
Tamaki Nakano
Keyword(s):  
Ethylene Glycol ◽  
Room Temperature ◽  
Addition Reaction ◽  
Monomer Concentration ◽  
Diglycidyl Ether ◽  
Porous Polymers ◽  
Addition Reactions ◽  
Poly Ethylene Glycol ◽  
Network Polymers ◽  
Poly Ethylene

Addition reactions of multi-functional amine, polyethylene imine (PEI) or diethylenetriamine (DETA), and poly(ethylene glycol) diglycidyl ether (PEGDE) or poly(ethylene glycol) diacrylate (PEGDA), have been investigated to obtain network polymers in H2O, dimethyl sulfoxide (DMSO), and ethanol (EtOH). Ring opening addition reaction of the multi-functional amine and PEGDE in H2O at room temperature or in DMSO at 90 °C using triphenylphosphine as a catalyst yielded gels. Aza-Michael addition reaction of the multi-functional amine and PEGDA in DMSO or EtOH at room temperature also yielded corresponding gels. Compression test of the gels obtained with PEI showed higher Young’s modulus than those with DETA. The reactions of the multi-functional amine and low molecular weight PEGDA in EtOH under the specific conditions yielded porous polymers induced by phase separation during the network formation. The morphology of the porous polymers could be controlled by the reaction conditions, especially monomer concentration and feed ratio of the multi-functional amine to PEGDA of the reaction system. The porous structure was formed by connected spheres or a co-continuous monolithic structure. The porous polymers were unbreakable by compression, and their Young’s modulus increased with the increase in the monomer concentration of the reaction systems. The porous polymers absorbed various solvents derived from high affinity between the polyethylene glycol units in the network structure and the solvents.

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