19744-87-7Relevant articles and documents
A simple route for the synthesis of 3,3,3′,3′-tetramethyl-2,3, 3′,4′-tetrahydro-1H,1′H-[4,9′-bixanthene]-1, 1′(2′H,9′H)-dione and its derivatives catalyzed by Mn 2+ and other transition metal cations
Pesyan, Nader Noroozi,Golsanamloo, Vali,Ganbari, Shahnaz,?ahin, Ertan
, p. 4096 - 4099 (2012)
A simple and efficient unusual coupling reaction of 9-(2-hydroxy-4,4- dimethyl-6-oxocyclohex-1-en-1-yl)-3,3-dimethyl-2,3,4,9-tetrahydro-1H-xanthen-1- one and its derivatives was accomplished in the presence of Mn2+, Cu2+, Cd2+/
Synthesis of novel tetrahydro[4,5]imidazo[2,1-b]-chromeno[4,3,2-de] quinazoline and benzothiazol-2-ylaminoxanthenone derivatives
Saeedi, Mina,Beheshtiha, Yahya S.,Heravi, Majid M.,Oskooie, Hossein A.
, p. 1831 - 1841 (2011)
Some novel tetrahydroquinazoline and xanthenone derivatives were synthesized from the reaction of dimedone and Schiff base in the presence of sulfamic acid in good yields. The Japan Institute of Heterocyclic Chemistry.
2,4,6-Trichloro-1,3,5-triazine as an efficient catalyst for synthesis of benzopyran derivatives under solvent-free conditions
Zhang, Peng,Yu, Yong-Dong,Zhang, Zhan-Hui
, p. 4474 - 4479 (2008)
An efficient and convenient procedure has been developed for the synthesis of benzopyran derivatives by one-pot condensation of substituted salicyaldehydes and substituted 1,3-hexanediones in the presence of a catalytic amount of 2,4,6-trichloro-1,3,5-tri
FeCl3·6H2O as a green and readily available catalyst for the synthesis of 1-oxo-hexahydroxanthenes by the condensation of salicylaldehydes with 1,3-diketones in aqueous media
Tajbakhsh, Mahmood,Heidary, Marzieh,Hosseinzadeh, Rahman,Amiri, Mohammadreza Azizi
, p. 141 - 145 (2016)
A facile and efficient method for the synthesis of 1-oxo-hexahydroxanthenes catalyzed by FeCl3·6H2O is described. The iron-catalyzed condensation of salicylaldehydes with cyclic 1,3-diketones afforded 1-oxo-hexahydroxanthene derivati
An Efficient and Ecofriendly Three-Component Reaction for the Rapid Synthesis of 2-Amino-4 H -chromenes Catalyzed by a DABCO-Based Ionic Liquid
Li, Cheng-Bin,Li, Yu-Wei,Xu, Da-Zhen
, p. 3708 - 3714 (2018)
An efficient, economical, and green strategy for the construction of biologically relevant 2-amino-4 H -chromene scaffolds via a tandem Knoevenagel-Pinner cyclization-Michael reaction has been successfully developed. In the presence of DABCO-based ionic l
An Efficient, Ecofriendly, and Sustainable Microwave-assisted Synthesis of Xanthene Derivatives Catalyzed by an Inexpensive and Green Catalyst Boric Acid (H3BO3) in Aqueous Media
Asiri, Yahya I.,Sultana, Syeda Shaheen,Tasqeeruddin, S.
, p. 511 - 516 (2022/01/26)
The present study describes unreported an efficient, sustainable, and green microwave-assisted synthesis of xanthene derivatives using an inexpensive environmentally benign and readily available catalyst boric acid. The synthesis was performed under conve
Ammonium chloride (NH4Cl): An efficient and environmentally benign catalyst for one-pot synthesis of xanthene derivatives under solvent-free conditions
Tasqeeruddin,Alam, M. Mujahid,Asiri, Yahya I.,Alshehri, Jaber Abdullah
, p. 353 - 360 (2020/01/03)
A highly efficient environmentally benign protocol has been developed for the condensation of aromatic aldehydes with 1,3-diketones under solvent-free conditions. Various aromatic aldehydes were used for the condensation with cyclohexa-1,3-diones in the p
