Results 1 to 10 of about 254 (104)

An Improved Synthetic Method for Sensitive Iodine Containing Tricyclic Flavonoids [PDF]

open access: yesMolecules, 2022
The synthesis of new iodine containing synthetic tricyclic flavonoids is reported. Due to the sensitivity of the precursors to the heat and acidic conditions required for the ring closure of the 1,3-dithiolium core, a new cyclization method has been ...
Mihail Lucian Birsa, Laura G. Sarbu
doaj   +2 more sources

An Approach to Paracyclophane-Based Tetrathiafulvalenes: Synthesis and Characterization of a Pseudo-Geminal [2.2]Paracyclophane 1,3-Dithia-2-Thione [PDF]

open access: yesMolecules, 2020
The synthesis of paracyclophane-based tetrathiafulvalene precursors is described in the context of the importance of these compounds in the field of material chemistry.
Lucian G. Bahrin   +4 more
doaj   +2 more sources

[2.2]Paracyclophane derivatives containing tetrathiafulvalene moieties [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2015
The synthesis of [2.2]paracyclophane derivatives containing tetrathiafulvalene units has been accomplished by the coupling reaction of 4-([2.2]paracyclophan-4-yl)-1,3-dithiol-2-thione in the presence of trimethylphosphite.
Laura G. Sarbu   +4 more
doaj   +2 more sources

Synthesis of Thieno[2,3-d]-1,3-dithiol-2-thiones from Thieno[2,3-d]-1,2,3-thiadiazoles: Matryoshka-type autoclave for high-temperature, high-pressure thermolysis microscale reactions [PDF]

open access: yesMolecules, 2002
Thieno[2,3-d]-1,2,3-thiadiazoles (1) react with carbon disulfide in a "Matryoshkatype" double compartment autoclave [1] to yield thieno[2,3-d]-1,3-dithiol-2-thiones (2).
Ving J. Lee   +3 more
doaj   +2 more sources

Tetrathiafulvalene - a redox-switchable building block to control motion in mechanically interlocked molecules. [PDF]

open access: yesBeilstein J Org Chem, 2018
With the rise of artificial molecular machines, control of motion on the nanoscale has become a major contemporary research challenge. Tetrathiafulvalenes (TTFs) are one of the most versatile and widely used molecular redox switches to generate and ...
Schröder HV, Schalley CA.
europepmc   +3 more sources

Reaction of 1,4,2-Dithiazolium and 1,3-Dithiolium Salts with Malononitrile [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1989
Abstract The reaction of 5-substituted 3-phenyl-1,4,2-dithiazolium salts with malononitrile gave not only 5-dicyanomethylene-3-phenyl-1,4,2-dithiazole and an isothiazole derivative, but 4-amino-5-cyano-2-(1-cyano-2-dialkylamino-2-mercaptovinyl)-6-phenylpyrimidines (6) and a butadiene derivative, depending on substituents at C-5 and bases
Katsumi Yonemoto   +2 more
openaire   +2 more sources

Iminium Salts of ω-Dithiafulvenylpolyenals: An Easy Entry to the Corresponding Aldehydes and Doubly Proaromatic Nonlinear Optic-phores [PDF]

open access: yes, 2008
A short, high-yielding route to ω-dithiafulvenylpolyenals (1) via the corresponding iminium salts (2) and starting from trimethyl-1,3-dithiolium tetrafluoroborate is reported.
B. Villacampa   +11 more
core   +2 more sources

Tris(pentafluorophenyl)borane and beyond: modern advances in borylation chemistry [PDF]

open access: yes, 2017
As main-group chemistry, in particular boron chemistry, has expanded and developed over the past 20 years, one reagent has risen to prominence as well.
James R. Lawson   +3 more
core   +2 more sources

A binaphthol-substituted tetrathiafulvalene with axial chirality and its enantiopure TCNQF4 charge-transfer salts [PDF]

open access: yes, 2011
International audienceA chiral tetrathiafulvalene (1) bearing a binaphtholdimethylene moiety on one side, an ethylenedithio substituent on the other side, is prepared from atropoisomeric (R)-, (S)- and racemic (R,S)-binaphthol. Its oxidation potential (0.
Fourmigué, Marc   +2 more
core   +3 more sources

Novel 9,10-bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene derivatives bridged by a crown ether unit at the 1,8-positions: A new type of redox-switchable hosts undergoing reversible structural changes [PDF]

open access: yes, 2006
Novel redox-switchable host molecules (2) composed of a 9,10-bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene unit and a crown ether moiety bridging the 1,8-positions have been synthesized.
Fujimori, K   +3 more
core   +3 more sources

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