FUNCTIONALIZED POLYCYCLIC AROMATIC HYDROCARBON COMPOUND AND LIGHT-EMITTING DEVICE INCLUDING THE SAME
Provided are a functionalized polycyclic aromatic hydrocarbon compound and a light-emitting device including the same. The functionalized polycyclic aromatic hydrocarbon compound is structurally stable, and exhibits high light-emission characteristics sin
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(2021/10/02)
Chemoselective Synthesis of 1,1-Disubstituted Vinyl Triflates from Terminal Alkynes Using TfOH in the Presence of TMSN3
1,1-Disubstituted vinyl triflates are synthesized by direct hydrotriflation of terminal alkynes employing a combination of TfOH and TMSN3 in DCM at room temperature. Interestingly, under these conditions, only terminal alkynes were selectively
A one-pot method for the synthesis of phenylalkynyl-substituted terminal alkynes by deprotection/stannylation followed by a Migita-Kosugi-Stille coupling
A practical one-pot approach for the synthesis of arylalkynyl-substituted terminal alkynes has been developed through a deprotection/ stannylation of a phenylethynyl phosphine oxide followed by Migita-Kosugi-Stille coupling, avoiding the longer synthetic route involving repeated deprotection/Sonogashira coupling. Other features of this approach include mild reaction conditions, excellent yields, facile isolation of products and wide functional group tolerance.
Organogels formed by substituent-free pyrene-appended oligo(m-phenylene ethynylene)s
A new class of pyrene-appended m-phenylene ethynylene oligomers, which bear no alkyl chains or heteroatoms, have been demonstrated to gelate organic solvents, and one of them forms chiral twisted gels in cyclohexane.
A rapid and efficient synthetic route to terminal arylacetylenes by tetrabutylammonium hydroxide- and methanol-catalyzed cleavage of 4-aryl-2-methyl-3-butyn-2-ols
Tetrabutylammonium hydroxide with methanol as an additive was found to be a highly active catalyst for the cleavage of 4-aryl-2-methyl-3-butyn-2-ols. The reaction was performed at 55-75 °C and gave terminal arylacetylenes in good to excellent yields within several minutes. Compared with the usual reaction conditions (normally >110 °C, several hours), this novel catalyst system can dramatically decrease the reaction time under much milder conditions.
Li, Jie,Huang, Pengcheng
p. 426 - 431
(2011/06/11)
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