36884-28-3Relevant articles and documents
Novel monoacylglycerol lipase inhibitor as well as preparation method and application thereof
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Paragraph 0250-0252, (2021/02/10)
The invention discloses a novel monoacylglycerol lipase inhibitor as well as a preparation method and application thereof. Specifically, the invention provides a compound shown as a formula I, or a pharmaceutically acceptable salt, a stereoisomer, or a deuterated derivative thereof. Experimental results show that the compound provided by the invention can effectively inhibit MAGL activity, can beused for preparing an MAGL inhibitor and preparing medicines for preventing and/or treating diseases (including endometrial cancer, colorectal cancer, liver cancer, breast cancer, ovarian cancer, neurodegenerative diseases and the like) related to abnormal MAGL activity, and has a wide application prospect.
Method for synthesizing fluorescent dye intermediate aldehyde by hydroformylation of 1,3-diene compound
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Paragraph 0042-0052, (2021/08/07)
The invention discloses a method for synthesizing a fluorescent dye intermediate aldehyde by hydroformylation of 1,3-diene compound. The method comprises the following steps: S1, sequentially adding 0.01 mmol (1 mol%) of [Rh(cod)Cl]2, 0.1 mmol of a phosphine ligand(P/Rh=10/1) and 1 mmol of diene into a reaction flask, adding 1 ml of a solvent DMF, putting the reaction flask into a high-pressure reaction kettle, after the reaction is finished, transferring a mixed solution into a 25 mL glass bottle with 200 microliters of n-tridecane as an internal standard by using a rubber head dropper, and detecting; and S2, determining the product yield and the structure through a gas chromatograph and a nuclear magnetic resonance spectrum, wherein the obtained olefin conversion rate is larger than 99%, the aldehyde yield ranges from 61% to 99%, and the regioselectivity of the product aldehyde ranges from 70/30 to 100/0. According to the method disclosed by the invention, the separation and purification steps of aldehyde products are simplified, and the substrate of the dialkene hydroformylation reaction is excellent in universality.
A Simple Nickel Catalyst Enabling an E-Selective Alkyne Semihydrogenation
Thiel, Niklas O.,Kaewmee, Benyapa,Tran Ngoc, Trung,Teichert, Johannes F.
supporting information, p. 1597 - 1603 (2020/02/05)
Stereoselective alkyne semihydrogenations are attractive approaches to alkenes, which are key building blocks for synthesis. With regards to the most atom-economic reducing agent dihydrogen (H2), only few catalysts for the challenging E-selective alkyne semihydrogenation have been disclosed, each with a unique substrate scope profile. Here, we show that a commercially available nickel catalyst facilitates the E-selective alkyne semihydrogenation of a wide variety of substituted internal alkynes. This results in a simple and broadly applicable overall protocol to stereoselectively access E-alkenes employing H2, which could serve as a general method for synthesis.