COMPOUNDS FOR USING IN IMAGING AND PARTICULARLY FOR THE DIAGNOSIS OF NEURODEGENERATIVE DISEASES
申请人:CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
公开号:US20190211011A1
公开(公告)日:2019-07-11
The invention relates to compounds of formula (II) for using in imaging and particularly for the diagnosis of neurodegenerative diseases
该发明涉及公式(II)的化合物,用于影像学,特别是用于诊断神经退行性疾病。
Transition-Metal-Free Cross-Coupling of Aryl and Heteroaryl Thiols with Arylzinc Reagents
作者:Bo Yang、Zhong-Xia Wang
DOI:10.1021/acs.orglett.7b03145
日期:2017.11.17
Cross-coupling of (hetero)arylthiols with arylzinc reagents via C–S cleavage was performed under transition-metal-free conditions. The reaction displays a wide scope of substrates and high functional-group tolerance. Electron-rich and -deficient (hetero)arylthiols and arylzinc reagents can be employed in this transformation. Mg2+ and Li+ ions were demonstrated to facilitate the reaction.
Synthesis and optical properties of a library of multi-colored isomeric aryldibenzopyrylium halochromic cations
作者:Samantha M. Meyer、Eva M. Charlesworth-Seiler、Joel G. Patrow、Jonathan P. Kitzrow、Deidra L. Gerlach、Eric W. Reinheimer、Bart J. Dahl
DOI:10.1016/j.tet.2020.131222
日期:2020.6
This report describes the synthesis of five new colorful 6-aryldibenzo[b,d]pyrylium cation salts, a largely unexplored structural unit. These rare compounds are benzannulated structural derivatives of the well-known flavylium cations found widespread in natural pigments. These new dyes are directly compared to three previously synthesized 6-aryldibenzo[b,d]pyrylium cation salts as well as eight colorful
Photoinduced Deaminative Borylation of Unreactive Aromatic Amines Enhanced by CO<sub>2</sub>
作者:Akira Shiozuka、Kohei Sekine、Yoichiro Kuninobu
DOI:10.1021/acs.orglett.1c01503
日期:2021.6.18
Herein, direct unreactive C–N borylation of aromatic amines by a photocatalyst was achieved. The C–N borylation of aromatic amines with bis(pinacolato)diboron (B2pin2) proceeded using a pyrene catalyst under light irradiation to afford desired borylated products and aminoborane as a byproduct. The yield of the borylated product improved under a CO2 atmosphere which probably reduced the inhibitory effect
The hyperpolarizability of non-polar tetraorganotin molecules with Td symmetry has been investigated by the hyper-Rayleighscatteringtechnique. The results show that, in spite of the absence of a dipolar contribution to the hyperpolarizability tensor, the value of β is significantly high.