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Применить Всего найдено 2. Отображено 2.
13-08-2014 дата публикации

Preparation method of CF2O-contained monomer liquid crystal compound

Номер: CN103980098A
Автор: ZENG YUAN, WU HUAFENG, ZHANG MAIXUAN, PENG YONG, JIAO HAIHUA, CHANG WENHUA
Принадлежит:

The invention provides a preparation method of a CF2O-contained monomer liquid crystal compound. The preparation method comprises the following steps of (1) with a compound with a structure as shown in the formula I as a raw material, reacting under the catalytic action of a zinc reagent and copper salt and in the existence of a solvent to generate a compound with a structure as shown in the formula II; (2) enabling the compound with the structure as shown in the formula II and a fluorinated reagent to be subjected to fluoridation in the existence of the solvent to generate a compound with a structure as shown in the formula III; (3) enabling the compound with the structure as shown in the formula III and boric acid as shown in the formula IV to be subjected to SUZUKI coupled reaction in the existence of the solvent to obtain the CF2O-contained monomer liquid crystal compound with a structure as shown in the formula V, wherein the CF2O-contained monomer liquid crystal compound with a structure ...

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Номер записи: 1
05-08-2015 дата публикации

Alkylation method of fluorine-containing aryl halid

Номер: CN104817438A
Автор: ZENG YUAN, ZHANG MAIXUAN, ZHOU YAN, WANG DAOXIANG, LI BOLAN
Принадлежит:

The invention provides an alkylation method of a fluorine-containing aryl halid. The structural formula of the fluorine-containing aryl halid is shown in formula I and formula II. The alkylation method of the fluorine-containing aryl halid comprises the following steps: (1) respectively using chemical compounds in formula I and formula II as raw materials, and performing a reaction on the raw materials and magnesium metal in an aprotic solvent so as to prepare Grignard reagents in formula III and formula IV; (2) performing a reaction with the Grignard reagents in formula III and formula IV and an alkyl halogen compound R1-Hal' under the catalysis of transition metal salt or the joint catalysis of transition metal salt and ligands so as to generate chemical compounds in formula V and formula VI. The alkylation method of the fluorine-containing aryl halid, provided by the invention, is simple in technological process and convenient and simple to operate, the occupation of industrial production ...

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Номер записи: 2