SOLVENT-FREE CROSS-COUPLING REACTION, AND PRODUCTION METHOD USING SAID REACTION
申请人:NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
公开号:US20210387994A1
公开(公告)日:2021-12-16
Disclosed is a cross-coupling reaction method which forms a chemical bond selected from C—N, C—B, C—C, C—O and C—S bonds, the method comprising:
preparing an aromatic compound (1) having a leaving group;
preparing a compound (2) capable of undergoing a cross-coupling reaction selected from an aromatic amino compound (2-1), a diboronic acid ester or the like (2-2), an aromatic boronic acid or the like (2-3), an aromatic compound (2-4) having a hydroxyl group and an aromatic compound (2-5) having a thiol group; and
performing a cross-coupling reaction of the compound (1) with the compound (2) in the presence of a palladium catalyst, a base and a compound (4) having a carbon-carbon double bond or a carbon-carbon triple bond, in the absence of a solvent.
Supramolecular Ensemble of a TICT-AIEE Active Pyrazine Derivative and CuO NPs: A Potential Photocatalytic System for Sonogashira Couplings
作者:Harnimarta Deol、Subhamay Pramanik、Manoj Kumar、Imran A. Khan、Vandana Bhalla
DOI:10.1021/acscatal.6b00393
日期:2016.6.3
The donor–acceptor system 4 having pyrazine scaffold as an acceptor moiety coupled to donor amino groups through rotatable phenyl rings has been synthesized, which formed aggregates in aqueousmedia, exhibited copper induced restriction to intramolecular rotation, and served as a “not quenched” probe for the detection of copper(II) ions. During this process, the aggregates of derivative 4 acted as
FLUORESCENT DYE FILMS FOR DETECTING NOx-BASED EXPLOSIVES IN THE AIR, IN SOLUTIONS, AND FROM WIPE SAMPLES
申请人:Institut Dr. Foerster GmbH & Co. KG
公开号:US20180372704A1
公开(公告)日:2018-12-27
A detection reagent for an analyte comprising a NOx-based group, wherein the detection reagent comprises an aryl amine and a structural formula of the aryl amine is selected from structural formulas 1, 2 or 3:
wherein
R
1
is selected from CO
2
−
, PhCO
2
−
, CO
2
X or PhCO
2
X with X═H alkyl, vinyl, allyl, homoallyl or aryl or
R
1
stands for C(O)NX
2
or PhC(O)NX
2
, with X═H, alkyl, perfluoroalkyl, vinyl, allyl, homoallyl or aryl;
R
2
, R
3
, R
4
, and/or R
5
independently of one another are selected from H, F, an alkyl or an aryl; and
R
6
is selected from an alkyl and an aryl.
A series of diphenylamino-substituted phenylene-(poly)ethynylenes were successfully synthesized by a combination of Sonogashira coupling and double elimination protocol of p-substituted sulfones. When UV-light was irradiated, the amino-substituted phenylene-(poly)ethynylene emitted strong luminescence. The emission underwent a large bathochromic shift in polar solvent because of stabilization of their charge-separated excited states. Analyses of fluorescence life times of aminoacetylenes revealed that radiationless process was suppressed in the polar solvent CH2Cl2, resulting in high quantum yields. (C) 2009 Elsevier Ltd. All rights reserved.