1095-78-9Relevant articles and documents
Preparation method of 2, 2-bis (4-aminophenyl) hexafluoropropane
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Paragraph 0068-0070; 0072, (2021/04/10)
The invention belongs to the technical field of compounds, and particularly relates to a preparation method of 2, 2-bis (4-aminophenyl) hexafluoropropane. The invention relates to a preparation method of 2, 2-bis-- (4-aminophenyl) hexafluoropropane, which is characterized by comprising the following steps: S1, reacting a compound I with an amine compound in the presence of a catalyst to obtain a compound II; and S2, treating the compound II to obtain the 2, 2-bis (4-aminophenyl) hexafluoropropane. The preparation method provided by the invention mainly solves the problems of high risk, high product separation and purification difficulty, harsh reaction conditions and the like in the traditional synthesis method. According to the method, 2, 2-bis (4-halogen phenyl) hexafluoropropane or 2, 2-bis (4-trifluoromethanesulfonyl phenyl) hexafluoropropane is used as a raw material, the raw material and an amine compound are subjected to a substitution reaction under the condition of a catalyst, and then a target product is obtained through deprotection and purification. The method has the advantages of mild reaction conditions, easiness in product purification, high reaction yield and the like.
Synthesis method of 2,2-bis(4-aminophenyl)hexafluoropropane
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Paragraph 0008; 0021-0033, (2020/07/12)
The invention relates to a 2,2-bis(4-aminophenyl)hexafluoropropane synthesis method, which comprises: adopting a compound represented by a formula I as a raw material, adopting nickel chloride as a catalyst, adopting guanidine hydrochloride as an ammonia source, and carrying out a reaction to obtain a compound represented by a formula II, wherein the compound represented by the formula II is the target product 2,2-bis(4-aminophenyl)hexafluoropropane. According to the invention, a brand-new reaction route is provided, bisphenol AF which is cheap and easy to obtain is adopted as a raw material,nickel chloride is adopted as a catalyst, guanidine hydrochloride is adopted as an ammonia source, and the reaction step is shortened into one step in a high-pressure kettle, so that operation is easy, safety is high, the yield is high, and industrial production is easy to achieve.
Functionalized Photoreactive Compounds
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, (2008/12/08)
The present invention concerns functionalized photoreactive compounds of formula (I), that are particularly useful in materials for the alignment of liquid crystals. Due to the adjunction of an electron withdrawing group to specific molecular systems bearing an unsaturation directly attached to two unsaturated ring systems, exceptionally high photosensitivities, excellent alignment properties as well as good mechanical robustness could be achieved in materials comprising said functionalized photoreactive compounds of the invention.