- Vibrational spectra and normal coordinate analysis of p-bis(dimethyl-hydroxy-silil)benzene-d0 and -d4
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The i.r. and Raman spectra of p-bis(dimethyl-hydroxy-silil)tetradeuterobenzene have been obtained and compared with data of the corresponding normal compound.Complete normal mode calculations of both -d0 and -d4 derivatives have been carried out using a set of valence force constants transferred from suitable molecules and refined to account for the observed i.r. and Raman data.Results of a model calculation, in which substituents are considered as point masses, are also discussed in order to provide a convenient starting point to study the chain conformation of a polymer obtained through polycondensation of the investigated molecule.
- Sbrana, G.,Neto, N.,Muniz-Miranda, M.,Nocentini, M.
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- Deuterated polyhalogen aromatic compound and preparation method thereof, and organic intermediate
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The invention discloses a perdeuterated polyhalogen aromatic compound and a preparation method thereof, and an organic intermediate. Cheap deuterium water is taken as a deuterated raw material, common toluene is taken as a solvent, silver salt is taken as
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Paragraph 0033-0057
(2021/07/24)
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- Synthesis of Multideuterated (Hetero)aryl Bromides by Ag(I)-Catalyzed H/D Exchange
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Deterium-labeled (hetero)aryl bromide is one of the most widespread applicable motifs to achieve important deuterated architectures for various scientific applications. Traditionally, these deterium-labeled (hetero)aryl bromides are commonly prepared via multistep syntheses. Herein, we disclose a direct H/D exchange protocol for deuteration of (hetero)aryl bromides using Ag2CO3 as catalyst and D2O as deuterium source. This protocol is highly efficient, simply manipulated, and appliable for deuterium-labeling of over 55 (hetero)aryl bromides including bioactive druglike molecules and key intermediates of functional materials. In addition, this method showed distinguishing site-selectivity toward the existing transition-metal-catalyzed HIE process, leading to multideuterated (hetero)aryl bromides in one step.
- Hu, Guang-Qi,Bai, Jing-Wen,Li, En-Ci,Liu, Kai-Hui,Sheng, Fei-Fei,Zhang, Hong-Hai
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supporting information
p. 1554 - 1560
(2021/03/03)
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- C-H Bond Functionalization of (Hetero)aryl Bromide Enabled Synthesis of Brominated Biaryl Compounds
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Aryl bromide is one of the most important compounds in organic chemistry, because it is widely used as synthetic building blocks enabling quick access to a wide array of bioactive molecules, organic materials, and polymers via the versatile cutting-edge t
- Liu, Kai-Hui,Hu, Guang-Qi,Wang, Cai-Xia,Sheng, Fei-Fei,Bai, Jing-Wen,Gu, Jian-Guo,Zhang, Hong-Hai
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supporting information
p. 5626 - 5630
(2021/08/03)
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- Deuterated Tauvid contrast agent
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The invention discloses a deuterated Tauvid contrast agent, the chemical structural general formula of the deuterated Tauvid contrast agent is shown in the specification, R1-R9 are respectively and independently H or D, and at least one hydrogen atom in R
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Paragraph 0023
(2021/06/12)
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