314020-53-6Relevant articles and documents
Halogenated conjugated diene compound and preparation method and application thereof
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Paragraph 0048-0055; 0056-0057, (2020/07/15)
The invention provides a novel halogenated conjugated diene compound 1 as well as a preparation method and application thereof. A conjugated diene compound is used as a raw material and is subjected to halogenation reaction to obtain a compound 1. A 2-aryl malonic acid derivative obtained by dehydrohalogenation aromatization reaction of the compound 1 can be applied to synthesis of a compound withbiological activity. The invention has the following remarkable characteristics and advantages: (1) the invention provides a novel halogenated conjugated diene compound 1 and a synthetic method thereof; and (2) the new compound 1 with the multifunctional group can be used for synthesizing other compounds with important values through further functional group conversion reaction.
Method and catalyst system for preparation of aromatic malononitrile
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Paragraph 0045; 0048; 0051, (2020/04/17)
The invention provides a method and a catalyst system for preparation of aromatic malononitrile. The preparation method of the aromatic malononitrile comprises the step of reacting at least one aromatic iodine compound with malononitrile in a solvent in t
Conjugated triene compound and preparation method and application thereof
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Paragraph 0063-0066, (2020/05/14)
The invention provides a novel conjugated triene compound 1 and a preparation method and application thereof. By taking a 2-(cyclohexenyl) malonic acid derivative compound as a raw material, isomerization reaction, halogenation reaction in the presence of a halogenation reagent and dehydrohalogenation reaction at a certain temperature are sequentially carried out to obtain a conjugated triene compound 1; 2-aryl malonic acid derivative obtained by aromatization reaction of the conjugated triene compound 1 can be applied to synthesis of compounds with biological activity. The invention has the following remarkable characteristics and advantages: (1) the invention provides a novel conjugated triene compound 1 and a synthetic method thereof; and (2) the new compound 1 with the multifunctionalgroup can be used for synthesizing other compounds with important values through further functional group conversion reaction.
Method for preparing 2-arylmalonic acid derivative, intermediate and application thereof
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Paragraph 0034-0049, (2020/07/15)
The invention provides a method for preparing a 2-arylmalonic acid derivative, an intermediate and application thereof. According to the method, a cyclohexadiene compound is used as a raw material, and the 2-arylmalonic acid derivative 3 is obtained through an isomerization reaction, a halogenation reaction in the presence of a halogenation reagent and a dehydrohalogenation aromatization reactionat a certain temperature in sequence. Compared with the prior art, the method has the following remarkable characteristics and advantages: (1) expensive metal catalysts are not needed in the reaction;(2) strong base with potential safety hazards is not needed in the reaction; and (3) the reaction is safe, the conditions are mild, the yield is high, the cost is low, and industrial production is facilitated.
Method for preparing 2,6-diethyl-4-methyl phenylmalonitrile
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Paragraph 0022-0039, (2019/05/04)
The invention relates to a method for preparing 2,6-diethyl-4-methyl phenylmalonitrile. In the presence of a catalyst, 2,6-diethyl-4-methyl bromobenzene, malononitrile and alkali react in an inert solvent to obtain 2,6-diethyl-4-methyl phenylmalonitrile;
Synthesis method of 2-(2,6-diethyl-4-methylphenyl)propanedinitrile
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Paragraph 0023-0079, (2019/02/21)
The invention discloses a synthesis method of 2-(2,6-diethyl-4-methylphenyl)propanedinitrile. The method comprises the following steps of using 4-methyl-2,6-diethyl bromobenzene and propanedinitrile as raw materials, and in an alkaline condition, catalyzi
A 2, 6 - diethyl -4 - methyl phenyl malononitrile preparation method
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Paragraph 0022-0041, (2019/07/04)
The invention relates to a 2, 6 - diethyl - 4 - methyl phenyl malononitrile preparation method, in the presence of a copper catalyst, 2, 6 - diethyl - 4 - methyl bromo, malononitrile and alkali in an inert solvent to obtain 2, 6 - diethyl - 4 - methyl phe
Phenyl pyrazoline compound with bioactivity and preparation method and application thereof
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Paragraph 0059; 0060; 0062, (2019/08/26)
The invention discloses a phenyl pyrazoline compound shown as a formula (I) and a preparation method and application thereof. R, R1, R2, R3 and R4 in the formula are defined in the specification. Thecompound shown as the formula (I) has herbicidal, insecticidal/acaricidal or bactericidal bioactivity and has high activity especially on weeds.
Preparation method and application of 2-aryl malonic acid derivative
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Paragraph 0046-0048; 0050; 0052; 0053, (2018/07/30)
The invention provides a preparation method and application of 2-aryl malonic acid derivative. The preparation method includes: using a cyclohexenone derivative as a raw material to be in condensationreaction with a malonic acid derivative at the presence of a catalyst A to obtain a 2-(cyclohexenylene) malonic acid derivative; enabling the 2-(cyclohexenylene) malonic acid derivative to be in aromatization reaction under action of a catalyst B to obtain the 2-aryl malonic acid derivative. Compared with the prior art, the preparation method is totally different from existing methods in synthesis strategy and used raw materials and has the advantages that reaction raw materials are easy to obtain; no solvent is needed during reaction, and yield is high; the catalyst B can be recycled, so that cost is lowered; the preparation method is high in yield, few in three wastes, environment-friendly and conducive to industrial production.
Preparation method and intermediate of pinoxaden
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Paragraph 0036; 0037, (2018/07/30)
The invention provides a preparation method and an intermediate of pinoxaden. The preparation method includes: using 2-methylacrolein as a raw material; subjecting the raw material to cyclization andaromatization to obtain herbicide-pinoxaden. Compared with the prior art, the preparation method has the distinguishing features and the advantages that a completely different preparation strategy isadopted; a completely different nonaromatic compound is used as the raw material which is safe and easy to obtain; the preparation method is few in three wastes, low in cost and conducive to industrial production.