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206 results about "Propynyl" patented technology

In organic chemistry, a propynyl functional group is a propyl bearing a triple bond. The 1-propynyl group has the structure CH₃-C≡C-R. The 2-propynyl group is also known as a propargyl group, and has the structure HC≡C−CH₂-R.

1-(7-ethoxycoumarin)-4-(2-methyl-8-methoxyquinoline)-1, 2, 3-triazole ratiometric fluorescence or ratiometric ultraviolet absorption probe agent and preparation and application thereof

The invention provides a 1-(7-ethoxycoumarin)-4-(2-methyl-8-methoxyquinoline)-1, 2, 3-triazole ratiometric fluorescence or ratiometric ultraviolet absorption probe agent and preparation and application thereof, and belongs to the technical fields of organic synthesis and analytic chemistry. The preparation method is characterized in that an intermediate, namely, 2-methyl-8-(propyn-2-yl alkoxy) quinoline, reacts with 7-(2-azidoethoxy)-coumarin to obtain a compound a of which triazolyl is connected with two fluorophores, namely, coumarin and quinoline, wherein the compound is 1-(7-ethoxycoumarin)-4-(2-methyl-8-methoxyquinoline)-1, 2, 3-triazole. The preparation method has the advantages that the reaction raw materials are easy to obtain, the synthesis method is simple, and the compound can be obtained by three-step reaction; the compound a generates ratiometric fluorescence at 480nm and 390nm in alcohol/aqueous solution, and trace Al<3+> can be measured accordingly; ratiometric ultraviolet absorption is produced at 253nm and 243nm, and trace Al<3+> can be measured accordingly. The probe agent is the probe agent being high in sensitivity, high in accuracy and high in selectivity and used for detecting Al<3+> ions through ratiometric fluorescence and ratiometric ultraviolet absorption. The structure formula of the compound a is as shown in the specification.
Owner:广西平果润民脱贫发展有限公司

Preparation of leather composite bactericidal mould inhibitor

The invention is a leather composite bactericidal mould inhibitor, and especially is the preparation of the leather composite bactericidal mould inhibitor by using quaternary ammonium salt compounds, 2-bromo-2-nitro-1,3-propanediol, iodo propynyl butylcarbamate, trilon B, a corrosion inhibitor, ethanol and water; the leather composite bactericidal mould inhibitor of the invention comprises the following components by mass: 1%-10% of quaternary ammonium salt compounds, 0.05%-3% of trilon B, 0.1-2% of 2-bromo-2-nitro-1,3-propanediol, 1%-50% of ethanol, 0.05%-5% of iodo propynyl butylcarbamate, 0.1%-20% of corrosion inhibitors, and the balance of water. The purpose of the invention is to provide the preparation of the leather composite bactericidal mould inhibitor, and the preparation comprises the following steps: mixing the quaternary ammonium salt compounds, 2-bromo-2-nitro-1,3-propanediol, and trilon B according to the mass percents with water which accounts for 50% of the balance of water, stirring for 3 hours to prepare a mixed substance A; mixing iodo propynyl butylcarbamate, the corrosion inhibitor, and ethanol according to the mass percents with the rest of water, stirring for 3 hours to prepare a mixed substance B; stirring the mixed substance A and the mixed substance B for reaction for 2 hours, allowing the mixture to stand for 2 hours, performing content determination of the mixed mixture, packaging the qualified mixture to obtain a qualified product. The purpose of the invention is also to dilute the leather composite bactericidal mould inhibitor with a dilution proportion of 50-500 times.
Owner:覃终
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