simple, efficient, and environmentally benign route was developed for the preparation of 14-aryl or alkyl-14H-dibenzo[a,j]xanthene, 1,8-dioxo-octahydroxanthene and 12-aryl—8,9,10,12-tetrahydrobenzo[a]xanthene-11-ones from condensation of various aldehydes with (i) β-naphthol, (ii) cyclic 1,3-dicarbonyl compounds and (iii) β-naphthol and cyclic 1,3-dicarbonyl compounds, using novel polymeric catalyst [poly(AMPS-co-AA)]
A magnetic nanoparticle supported dual acidic ionic liquid: a “quasi-homogeneous” catalyst for the one-pot synthesis of benzoxanthenes
作者:Qiang Zhang、Hong Su、Jun Luo、Yunyang Wei
DOI:10.1039/c1gc16031a
日期:——
A novel magneticnanoparticle supported dual acidic ionic liquid catalyst was synthesized by anchoring 3-sulfobutyl-1-(3-propyltriethoxysilane) imidazolium hydrogen sulfate onto the surface of silica-coated Fe3O4 nanoparticles. Due to the combination of nano-support features and flexible imidazolium linkers, it acted as a “quasi-homogeneous” catalyst to effectively catalyze the one-pot synthesis of
One-pot synthesis of xanthene derivatives catalyzed by Fe(III) tetranitrophthalocyanine immobilized on activated carbon
作者:H. Huang、Y. Yao、Q. Lin、J. Zhao、C. Hua、X. Gou
DOI:10.1134/s1070363216040307
日期:2016.4
multicomponent one-pot reaction of aromatic aldehydes, β-naphthol, and 5,5-dimethylcyclohexane-1,3-dione or 1,3-cyclohexanedione upon efficient and eco-friendly catalysis of Fe(III) tetranitrophthalocyanine immobilized on activated carbon in ethanol. The method tolerated a variety of functional groups and the process was carried out under mild conditions to give high yield of products (85–91%) in 30 min
One-Pot, Three-Component Condensation of Aldehydes, 2-Naphthol and 1,3-Dicarbonyl Compounds
作者:Li-Ping Mo、Hong-Li Chen
DOI:10.1002/jccs.201000025
日期:2010.4
A practical and efficient procedure for the one‐pot multicomponent couping of aryl aldehydes, 2‐naphthol and cyclic 1,3‐dicarbonyl compounds using perchloric acid adsorbed on silica gel (HClO4‐SiO2) as a highly efficient, inexpensive, convenient, reusable heterogeneous catalyst under solvent‐free conditions has been developed. Various biologically important 12‐aryl‐8,9,10,12‐tetrahydrobenzo[a]xanthen‐11‐one
一种实用高效的方法,可通过吸附在硅胶上的高氯酸(HClO 4 -SiO 2)作为芳烃醛,2-萘酚和环状1,3-二羰基化合物的单锅多组分偶合,高效,廉价,方便,已开发出在无溶剂条件下可重复使用的多相催化剂。各种具有生物学重要意义的12-芳基-8,9,10,12-四氢苯并[ a ]黄嘌呤-11-one衍生物均已高效合成,收率很高。本方法具有许多优点,例如反应时间短,后处理简单,产率高,成本低以及反应条件温和。此外,该催化剂可以简单地回收和再利用而不会明显损失其催化活性。
Triphenylphosphine-m-sulfonate/carbon tetrabromide as an easily recoverable catalyst system for the efficient synthesis of xanthene and xanthenone derivatives under solvent-free conditions
作者:Cong-De Huo、Xia-Zhen Bao、Dong-Cheng Hu、Xiao-Dong Jia、Chou-Gu Sun、Cheng Wang
DOI:10.1016/j.cclet.2014.01.023
日期:2014.5
Abstract A solid complex, readily prepared from commercially available sodium triphenylphosphine- m -sulfonate (TPPMS) and carbontetrabromide, can be used as an easilyrecoverable and reusable catalyst system for one-pot condensation of 2-naphthol with aldehydes to construct 14-aryl(alkyl)-14 H -dibenzo[ a , j ]xanthene derivatives and one-pot condensation of 2-naphthol with aldehydes and cyclic 1