- Zinc salt-catalyzed reduction of α-aryl imino esters, diketones and phenylacetylenes with water as hydrogen source
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The zinc salt-catalyzed reduction of α-aryl imino esters, diketones and phenylacetylenes with water as hydrogen source and zinc as reductant was successfully conducted. The presented method provides a low-cost, environmentally friendly and practical preparation of α-aryl amino esters, α-hydroxyketones and phenylethylenes. By using D2O as deuterium source, the corresponding products were obtained in high efficiency with excellent deuterium incorporation rate, which gives a cheap and safe tool for access to valuable deuterium-labelled compounds. This journal is
- Shen, Guoli,Liu, Haojie,Chen, Jingchao,He, Zhenxiu,Zhou, Yongyun,Wang, Lin,Luo, Yang,Su, Zhimin,Fan, Baomin
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supporting information
p. 3601 - 3610
(2021/05/04)
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- Method for efficiently preparing styrene and deuterated styrene compounds
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The invention discloses a method for efficiently preparing a styrene compound and a deuterated styrene compound. A phenylacetylene compound and water or heavy water are used as reaction raw materials;lewis acid is used as a catalyst; reacting and synthesizing in an organic solvent under a reducing agent are carried out to obtain a target product styrene compound or deuterated styrene compound; the reaction general formula is disclosed in the invention; the invention provides a method for preparing the styrene compound and the deuterated styrene compound, which is simple, mild, efficient and green to operate; water or heavy water is taken as a hydrogen source and a deuterium source respectively, and the process is green and environment-friendly; in addition, the method is simple and easy to operate, mild in reaction condition and high in synthesis efficiency, the yield of styrene reaches up to 99%, the yield of deuterated styrene reaches up to 99%, the deuterium doping rate reaches upto 98% (alpha) and 96% (beta), and wide application prospects are achieved.
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Paragraph 0104-0107
(2020/09/12)
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- A general synthetic method for 2-substituted anthracenes
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Anthracenes bearing a primary alkyl, ω-hydroxyalkyl, aryl or vinyl substituent at the 2-position are conveniently prepared by a copper-catalyzed Grignard reaction on 2,3-epoxy-1,2,3,4-tetrahydroanthracene, followed by dehydration - dehydrogenation of the resulting alcohols with tetrachloro-1,2-benzoquinone (o-chloranil).
- Dehaen, Wim,Corens, David,L'Abbe, Gerrit
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p. 201 - 203
(2007/10/03)
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- Process for preparation of 2-anthryl and substituted 2-anthryl functional monomers and polymers
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Process for preparation of 2-anthryl and substituted 2-anthryl functional monomers and polymers. In the process for preparation of these monomers, an anthracenic reactant of the formula: STR1 wherein X and Y are independently selected from hydrogen, chlorine, bromine, alkyl of 1 to 4 carbon atoms or phenyl Is acylated in nitrobenzene under conditions which favor reaction at the two position. The resulting acylated product can then be (a) reacted with an alkylidenephosphorane (Wittig synthesis) or (b) reduced to the corresponding alcohol. Subsequent to such reduction, this alcohol can undergo further modification at the hydroxyl function to form a polymerizable addition monomer. Through the proper selection of the relative concentration of reactants and control over processing conditions, it is possible not only to prepare such monomers in high yields but also upon polymerization of such monomers, to obtain high molecular weight 2-anthryl and substituted 2-anthryl functional polymers (molecular weight of at least 104). Polymers of such high molecular weight can readily be formed without the use of binders into self-supporting films. Such films are intrinsically photoconductive in the ultraviolet region of the electromagnetic spectrum and have good transport capabilities for charge carriers of both polarities.
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