- Preparation method of substituted thiophene-3-one compound
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The invention provides a preparation method of a substituted thiophene-3-one compound, comprising: subjecting material A and material B to Michael addition reaction to obtain an addition product; subjecting the addition product to Dieckmann condensation reaction to obtain a substituted thiophene-3-one compound having a structure shown as formula (IV) that is shown in the description. The preparation method provided by the application has the advantages that using solvents and strong bases is not required, reaction materials are low in price and easy to obtain, no wastewater is produce, and therefore, the preparation method has good environmental friendliness; compared with existing preparation methods, the preparation method has a short synthetic route, can be performed under mild conditions and features good yield stability and good repeatability, which is helpful for greatly increasing total yield of the substituted thiophene-3-one compound and helpful for industrial popularization.
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Paragraph 0052; 0053; 0060; 0061; 0065; 0066; 0069; 0070
(2018/08/04)
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- Phototriggered base proliferation: A powerful 365 nm LED photoclick tool for nucleophile-initiated thiol-Michael addition reaction
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Photocaged amines (PCAs) can allow a spatiotemporal control of the highly versatile and widely implemented nucleophile-catalyzed thiol-Michael addition reaction. However, a major challenge with most PCAs is that their relatively low quantum yields easily lead to low photosensitivity, especially under the radiation of light-emitting diodes (LEDs). In this paper, the phototriggered base proliferation (PBP) reaction as a powerful 365 nm LED photoclick tool is presented for the nucleophile-initiated thiol-Michael addition reaction. Compared to the PCA system, the advantages of this approach lie in its enhanced photosensitivity, increased reaction rate and elevated conversion. Finally, due to the persistent interactions of the produced longeval amine, remarkable post conversion was thus initially achieved after irradiation.
- Xu, Ruixin,Guan, Xiaoyuan,He, Minghui,Yang, Jianwen
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p. 914 - 918
(2017/01/13)
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- HETEROCYCLIC INHIBITORS OF GLUTAMINASE
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The invention relates to the heterocyclic compounds of Formula (I) as defined further herein, and pharmaceutical preparations thereof. The invention further relates to methods of treating cancer, immunological or neurological diseases using the heterocyclic compounds of the invention.
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Page/Page column 56; 57
(2013/06/06)
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