50606-95-6Relevant articles and documents
Spiropyrane derivative with color, fluorescence and liquid crystal property triple switching effects as well as preparation method and application thereof
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Paragraph 0111-0115; 0120; 0123-0132, (2021/06/26)
The invention discloses a spiropyrane derivative with color, fluorescence and liquid crystal property triple switching effects as well as a preparation method and application of the spiropyrane derivative. The spiropyrane derivative is prepared by esterification reaction of 1',3',3'-trimethyl-6-nitrospiro[benzopyran-2,2'-dihydroindole]-5', 8-diol and alkyl / alkoxy substituted benzoic acid with alkyl / alkoxy group at para-position or acrylate / methacrylate group at the chain end. The spiropyran derivative is used as a molecular switch in a smart material. The spiropyran derivative has responsiveness to light, heat, pH value and force, has triple switchable effects of color, fluorescence and liquid crystal property, has significant difference in response behaviors in different chemical environments, and is suitable for being used as a molecular switch in an intelligent material.
Benzyltin pyrimidine derivatives, their preparation and their use as medicaments
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, (2017/01/19)
The invention relates to the field of pharmaceutical chemistry, specifically to benzyl pyrimidine derivatives (I), preparation methods thereof, medicinal compositions containing the derivatives and medical application of the derivatives, in particular, application of the derivatives as an immunosuppressant in autoimmune diseases and organ transplantation.
Preparation of new substituted bis(benzoyl) peroxides under aqueous conditions in the presence of stearyltrimethylammonium chloride
Moorhoff, Cornelis M.,Braybrook, Carl
, p. 397 - 405 (2007/10/03)
A series of new substituted bis(benzoyl) peroxides has been synthesised from their corresponding acid chlorides in high yield. The reactions were carried out in aqueous sodium peroxide solution and butanone in the presence of 0.5% stearyltrimethylammonium chloride (STAC) at a temperature below 15°C. STAC improved the purity, and the fast addition improved the yield of the peroxides. Mass spectral analysis of substituted bis(benzoyl) peroxides using EI has been carried out for accurate mass determinations. Springer-Verlag 2003.