Results 31 to 40 of about 3,267 (118)

Perhydropyrimidinylium and 1,3-diazepinylium salts as potential ionic liquids [PDF]

open access: yes, 2006
Saturated or partially saturated heterocyclic compounds were uncovered as interesting and potential ionic liquid media. Zwitterionic compounds with perhydropyrimidinylium, 1,3- diazepinylium and quinazolinylium carbocations were utilized in the ...
Michał Flasiński   +7 more
core   +1 more source

2-N,N-Dialkylamino-1,3-Dithiolium Salts

open access: yesActa Chemica Iasi, 2018
Abstract The synthesis of 2-N,N-dialkylamino-1,3-dithiolium salts is reviewed.
openaire   +1 more source

Liquid and solid-state structures of 1,3-dimethylimidazolium salts

open access: yes, 2003
Using neutron and single crystal X-ray diffraction the structures of 1,3-dimethylimidazolim chloride and hexafluorophosphate salts have been determined in the liquid and the solid-state.
Soper, A. K.   +11 more
core   +2 more sources

Remarkable substituent effects on antimicrobial activities of 1,3-diorganylimidazolidinium salts

open access: yes, 2002
In vitro antibacterial and antifungal activities of a series of 25 diazolidinium salts, 1,3-diorganylimidazolidinium (1), together with 1,3-dialkylpyrimidinium (2), were evaluated against standard strains: Escherichia coli (ATCC 25922), Staphylococcus ...
Cetinkaya, B   +5 more
core   +1 more source

Construction of spirocycles containing highly substituted pyrroli-dine and 1-indanone motifs with spiro quaternary stereogenic centers via 1,3-dipolar cycloaddition of 2-alkylidene-1-indanone and azomethine ylides promoted by simple imidazolium salts

open access: yes, 2015
The 1,3-dipolar cycloaddition of 2-alkylidene-1-indanone with azomethine ylides has been developed successfully promoted by simple imidazolium salts to construct a variety of spirocycles containing highly substituted pyrrolidines efficiently, affording ...
Hu, Wei-Qiang   +8 more
core   +1 more source

Stable [M2F11]– (M = Nb, Ta) Salts of Protonated 1,3-Dimethoxybenzene

open access: yes, 2013
The 3:1 molar reactions of MF5 (M = Nb, 1a; M = Ta, 1b) with 1,3-dimethoxybenzene in CHCl3 led to the synthesis of the arenium salts [2,4-(OMe)2C6H5][M2F11] (M = Nb, 3a; M = Ta, 3b) in good yields. The reactions took place with the intermediate formation
C. Pinzino   +6 more
core   +1 more source

a-Hidroxilação de compostos 1,3-dicarbonilados: síntese da harzialactona e de y-lactonas análogas [PDF]

open access: yes, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2015.Neste trabalho, foi desenvolvida uma metodologia simples para realizar a ?-hidroxilação ...
Peterle, Marcos Maragno
core  

Microwave-assisted synthesis of hydroxymethyl ketones using azolium-2-carboxylate zwitterions as catalyst precursors

open access: yes, 2017
peer reviewedFollowing an initial screening of six common imidazolium, imidazolinium, and dithiolium salts in the presence of a base, 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IDip) and 1,3-dimesitylimidazolin-2-ylidene (SIMes) were identified as
Victoria Magrioti   +5 more
core   +2 more sources

MONOMERS, POLYMERS AND CHARGE-TRANSFER COMPLEXES OF DITHIAFULVENES AND POLYMERS FROM 4,4'-SULFONYL DIPHENOL (2-BENZYLIDENE, 1,3-DITHIOLES, 1,3-DITHIOLIUM).

open access: yes, 1986
Monomers, polymers, charge-transfer complexes of 2-benzylidene-1,3-dithioles (Dithiafulvenes), and 1,3-dithiolium (Dithiafulvenium) salts of dithioesters and poly(dithioesters) were synthesized.
FIGUEROA, FRANCISCO RAMON.
core  

The preparation of organosulfur derived electron transfer salts

open access: yes, 2009
The concept of this thesis is to effect greater control over the crystalline state of radical cation salts in order to enhance electron transport, and to allow for the incorporation of additional functionality such as optical activity or magnetism.
Brooks, AC, Brooks, Andrew C
core  

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