[EN] A PROCESS FOR THE PREPARATION OF TRIAZINE INTERMEDIATES AND A PROCESS FOR THE PREPARATION OF UV ABSORBERS THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION D'INTERMÉDIAIRES DE TRIAZINE ET PROCÉDÉ DE PRÉPARATION D'ABSORBEURS UV ASSOCIÉS
申请人:BASF SE
公开号:WO2020144093A1
公开(公告)日:2020-07-16
The presently claimed invention relates to a novel, highly efficient and general process for the preparation of the triazine intermediates and their use in the preparation of UV absorbers.
Nitrogen Dioxide-Catalyzed Electrophilic Iodination of Arenes
作者:Yun-Lai Ren、Huantao Shang、Jianji Wang、Xinzhe Tian、Shuang Zhao、Qian Wang、Fuwei Li
DOI:10.1002/adsc.201300581
日期:2013.11.25
AbstractNitrogen dioxide is demonstrated to be an effective catalyst precursor for the iodination of alkoxy‐substituted benzenes and naphthalenes. Different from the transition metal catalysts, nitrogen dioxide can be easily separated from the final products, and is free of heavy metal waste. Although the present catalyst precursor is toxic, it does not stain the final products due to its low‐boiling character. No other reagents apart from 0.5 equiv. of iodine (I2), 6.5 mol% nitrogen dioxide and acetonitrile solvent were used in the iodination, and basically all the iodine atoms in the iodine source were transferred to the iodination products, showing that the presented protocol is highly atom‐economic and practical.magnified image
Pinette, Justus Liebigs Annalen der Chemie, 1888, vol. 243, p. 32,40
作者:Pinette
DOI:——
日期:——
SELECTIVE S1P1/EDG1 RECEPTOR AGONISTS
申请人:Merck & Co., Inc.
公开号:EP1469863A2
公开(公告)日:2004-10-27
AMINE COMPOUNDS HAVING ANTI-INFLAMMATORY, ANTIFUNGAL, ANTIPARASITIC AND ANTICANCER ACTIVITY