scholarly journals Proton transfer vs. oligophosphine formation by P–C/P–H σ-bond metathesis: decoding the competing Brønsted and Lewis type reactivities of imidazolio-phosphines

2020 ◽  
Vol 49 (47) ◽  
pp. 17401-17413
Author(s):  
Mario Cicač-Hudi ◽  
Christoph M. Feil ◽  
Nicholas Birchall ◽  
Martin Nieger ◽  
Dietrich Gudat
Keyword(s):  
Proton Transfer ◽  
Lewis Acid ◽  
Acid Base ◽  
Reaction Cascades

Cationic imidazolio-phosphines show two-sided reactivity towards bases, undergoing either Brønsted-type proton transfer to imidazolio-phosphides or autocatalytic Lewis acid/base reaction cascades to yield P-free imidazolium ions and oligophosphines.

Proton-Transfer and H2-Elimination Reactions of Trimethylamine Alane: Role of Dihydrogen Bonding and Lewis Acid−Base Interactions

2009 ◽  
Vol 48 (8) ◽  
pp. 3667-3678 ◽  
Author(s):  
Oleg A. Filippov ◽  
Victoria N. Tsupreva ◽  
Lyudmila M. Golubinskaya ◽  
Antonina I. Krylova ◽  
Vladimir I. Bregadze ◽  
...  
Keyword(s):  
Proton Transfer ◽  
Lewis Acid ◽  
Acid Base ◽  
Dihydrogen Bonding ◽  
Elimination Reactions ◽  
Trimethylamine Alane ◽  
H2 Elimination

Multi-molar CO2 capture beyond the direct Lewis acid–base interaction mechanism

2020 ◽  
Vol 22 (20) ◽  
pp. 11354-11361 ◽  
Author(s):  
Chenchen Li ◽  
Dongmei Lu ◽  
Chao Wu
Keyword(s):  
Proton Transfer ◽  
Lewis Acid ◽  
Co2 Capture ◽  
Transfer Process ◽  
Interaction Mechanism ◽  
Multiple Site ◽  
Acid Base ◽  
Base Interaction ◽  
Proton Transfer Process ◽  
Acid Base Interaction

Competing with the Lewis acid-base reactions, proton transfer related interactions dominate the multi-molar CO2 capture in three typical multiple-site ILs. For ammonium-based ILs, the proton transfer process is feasible only with the help of CO2 molecule.

Solvation and redox properties of [Co(en)3]3+-[Co(en)3]2+ system

1980 ◽  
Vol 45 (2) ◽  
pp. 335-338 ◽  
Author(s):  
Adéla Kotočová ◽  
Ulrich Mayer
Keyword(s):  
Hydrogen Bond ◽  
Lewis Acid ◽  
Specific Interaction ◽  
Redox Properties ◽  
Solvation Effect ◽  
Interacting Particles ◽  
Acid Base ◽  
Polar Solvents ◽  
Oxidation Reduction ◽  
Solvent Molecules

The solvation effect of a number of nonaqueous polar solvents was studied on the oxidation-reduction properties of the [Co(en)3]3+-[Co(en)3]2+ system. Interactions of these ions with the solvent molecules are discussed in terms of their coordination, which is accompanied by a specific interaction of the Lewis acid-base type, namely formation of a hydrogen bond between the interacting particles. This is the main controlling factor of the redox properties of the studied system.

Chalcogen versus Dative Bonding in [SF3]+ Lewis Acid–Base Adducts: [SF3(NCCH3)2]+, [SF3(NC5H5)2]+, and [SF3(phen)]+ (phen = 1,10-phenanthroline)

2021 ◽  
Vol 60 (6) ◽  
pp. 3893-3901
Author(s):  
Douglas Turnbull ◽  
Praveen Chaudhary ◽  
Paul Hazendonk ◽  
Stacey D. Wetmore ◽  
Michael Gerken
Keyword(s):  
Lewis Acid ◽  
Acid Base

scholarly journals Lewis acid / Base-free Strategy for the Synthesis of 2-Arylthio and Selenyl Benzothiazole / Thiazole and Imidazole

2021 ◽  
Vol 27 (1) ◽  
pp. 17-23
Author(s):  
Guniganti Balakishan ◽  
Gullapalli Kumaraswamy ◽  
Vykunthapu Narayanarao ◽  
Pagilla Shankaraiah
Keyword(s):  
Lewis Acid ◽  
Bond Formation ◽  
Acid Base ◽  
Mechanistic Pathway ◽  
Wide Range ◽  
Acid And Base ◽  
Lewis Acid And Base ◽  
Sulfur Bond

Abstract A Cu(II)-catalyzed Csp2-Se and Csp2-Sulfur bond formation was achieved with moderate to good yields without the aid of Lewis acid and base. The reaction is compatible with a wide range of heterocycles such as benzothiazole, thiazole, and imidazole. Also, this typical protocol is found to be active in thio-selenation via S-H activation. Additionally, we proposed a plausible mechanistic pathway involving Cu(III) putative intermediate.

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