Application of Nanosized Cu<sub>0.5</sub>Co<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub>Spinel Ferrite as a Nanocatalyst in the Synthesis of 14-Aryl-14H-dibenzo[a,j]xanthene Derivatives under Solvent-free Conditions
obtained by the hydrothermal method had the single‐phase crystalline. The resultant spinel ferrites were employed in the synthesis of 14‐aryl‐14‐H‐dibenzo[a,j]xanthenederivatives. It was found that the nanocatalyst Cu0.5Co0.5Fe2O4 displays the best performance in the synthesis of 14‐aryl‐14H‐dibenzo[a,j]xanthenes. The catalyst was reused several times without significant loss of its activity for the
采用水热法合成了铜钴取代的尖晶石型铁素体Cu 1-x Co x Fe 2 O 4(0≤X≤1)。所得的尖晶石铁氧体通过不同的技术进行系统地表征,例如X射线衍射(XRD),扫描电子显微镜(SEM),能量色散X射线光谱(EDX)和傅里叶变换红外光谱(FT-IR)。结果表明,水热法制得的所有尖晶石铁素体均为单相晶体。所得的尖晶石铁氧体用于合成14-芳基-14-H-二苯并[a,j]氧杂蒽衍生物。发现纳米催化剂Cu 0.5 Co 0.5 Fe 2 O图4显示了在14-芳基-14H-二苯并[a,j]氧杂蒽的合成中的最佳性能。将该催化剂重复使用数次,而不会显着损失其用于制备所需产物的活性。此外,产品的高收率,无溶剂条件和催化剂的可重复使用性是本研究的其他有价值的优势。
One-pot synthesis of various xanthene derivatives using ionic liquid 1,3-disulfonic acid imidazolium hydrogen sulfate as an efficient and reusable catalyst under solvent-free conditions
study, 1,3-disulfonic acid imidazolium hydrogensulfate (DSIMHS) is used as an efficient and reusable ionic liquid for the green, mild, and efficientsynthesis of xanthenes under solvent-free conditions. Simple and easy work-up, low cost, green process, short reaction times and excellent yields of the products are the advantages of this procedure. Further, the catalyst can be recycled and reused at least
Facile and Efficient Synthesis of 14‐Alkyl‐ or Aryl‐14‐H‐Dibenzo[a,j]xanthenes using Sulfonyl‐Functionalized Ionic Liquids
作者:Pratibha Kumari、Vinith Yathindranath、S. M. S. Chauhan
DOI:10.1080/00397910701798234
日期:2008.1.1
Abstract An efficient, simple, and rapid synthesis of 14‐alkyl‐or aryl‐14‐H‐dibenzo[a,j]xanthenes is reported by one‐pot condensation of 2‐naphthol with alkyl or aryl aldehydes in the presence of sulfonyl‐functionalized acidic ionic liquids at 125°C.
Abstract A simple and efficient procedure has been developed for the preparation of 14-aryl-14H-dibenzo[a,j]xanthene derivatives using fluoroboric acid adsorbed on silica gel as a heterogeneous catalyst. The methodology involves the one-pot condensation reaction of β-naphthol and aryl aldehydes under solvent-free conventional heating conditions. The present approach offers several advantages such as
Polystyrene Sulfonic Acid Promoted Synthesis of 14-Aryl-14<i>H</i>-dibenzo[<i>a,j</i>]xanthenes
作者:Bi Bi Fatemeh Mirjalili、Zahra Zaghaghi、Azam Monfared
DOI:10.1080/00304948.2020.1780882
日期:2020.9.2
Xanthenes and their derivatives have received special attention due to their wide range of biological and pharmaceutical activities. 1–5 Xanthanes are typically synthesized via condensation of β-na...