37097-06-6Relevant academic research and scientific papers
Preparation method of xanthene compound
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Paragraph 0020-0021; 0026-0028, (2020/10/29)
The invention discloses a preparation method of a xanthene compound. The preparation method comprises the following steps: (1) adding reaction substrates: aromatic aldehydes, 2-naphthol and a proper amount of water into a reactor; (2) heating to 110-180 D
High acidity cellulose sulfuric acid from sulfur trioxide: A highly efficient catalyst for the one step synthesis of xanthene and dihydroquinazolinone derivatives
Yue, Xiaofei,Wu, Zhiqiang,Wang, Gang,Liang, Yanping,Sun, Yanyan,Song, Manrong,Zhan, Haijuan,Bi, Shuxian,Liu, Wanyi
, p. 28718 - 28723 (2019/09/30)
A cellulose sulfonate catalyst (HS-cellulose sulfonate) with high stability, excellent catalytic activity and high acidity value (about 1.55 mmol g-1) was successfully prepared by SO3 gas phase sulfonation. The basic morphology and nanostructure of the catalyst were determined by HRTEM, XRD, IR, TG, etc. In addition, the catalyst was applied to the catalytic reaction of a dihydroquinazolinone derivative and a xanthene compound, and very valuable results were obtained. The development and preparation of cellulose sulfonate catalysts provide a good approach for the development and application of cellulose, and also an important application of green organic catalytic synthesis methodology.
Fe2+ supported on hydroxyapatite-core–shell-γ-Fe2O3 nanoparticles: Efficient and recyclable green catalyst for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthene derivatives
Haeri, Hakimeh Sadat,Rezayati, Sobhan,Nezhad, Eshagh Rezaee,Darvishi, Hamed
, p. 4773 - 4784 (2016/07/06)
In this work, Fe2+ supported on hydroxyapatite-core–shell-γ-Fe2O3 nanoparticles (γ-Fe2O3–HAp-Fe2+ NPs) has been prepared and characterized by Fourier transform infrared spectroscopy, X-ray
Efficient one-pot synthesis of 14-aryl-14H-dibenzo[a,j]xanthene derivatives promoted by niobium pentachloride
De Andrade Bartolomeu, Aloisio,De Menezes, Manoel Lima,De Silva Filho, Luiz Carlos
, p. 1593 - 1600 (2015/03/30)
A simple and efficient procedure for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthene derivatives through one-pot condensation of 2-naphthol with aryl aldehydes in the presence of niobium pentachloride is described. The reactions were carried out using 2
Efficient one-pot synthesis of 14-aryl-14H-dibenzo[a,j]xanthene derivatives promoted by niobium pentachloride
De Andrade Bartolomeu, Aloisio,De Menezes, Manoel Lima,Da Silva Filho, Luiz Carlos
, p. 1593 - 1600 (2015/02/19)
A simple and efficient procedure for the synthesis of 14-aryl-14H-dibenzo[a,j ]xanthene derivatives through one-pot condensation of 2-naphthol with aryl aldehydes in the presence of niobium pentachloride is described. The reactions were carried out using
