1309477-29-9Relevant academic research and scientific papers
Hetero-annulated coumarins as new AChE/BuChE inhibitors: synthesis and biological evaluation
Ebrahimi, Seyed Esmaeil Sadat,Ghadirian, Pegah,Emtiazi, Hamideh,Yahya-Meymandi, Azadeh,Saeedi, Mina,Mahdavi, Mohammad,Nadri, Hamid,Moradi, Alireza,Sameem, Bilqees,Vosooghi, Mohsen,Emami, Saeed,Foroumadi, Alireza,Shafiee, Abbas
, p. 1831 - 1841 (2016)
A series of chromene-fused coumarins known as 10,11-dihydrochromeno[4,3-b]chromene-6,8(7H,9H)-diones 4a–o were synthesized through one-pot reaction of appropriate benzaldehydes, dimedone, and 4-hydroxycoumarin in the presence of nano-silica sulfuric acid
Efficient and highly selective production of 10,11-dihydrochromeno[4,3-b]chromene-6,8(7H,9H)-diones using a mesoporous silica-based nanocatalyst
Kohzadian, Alireza,Zare, Abdolkarim
, p. 5473 - 5485 (2019/07/08)
Abstract: An efficient and highly selective protocol for the production of 10,11-dihydrochromeno[4,3-b]chromene-6,8(7H,9H)-dione derivatives has been developed. The one-pot multi-component condensation of arylaldehydes with 4-hydroxycoumarin and dimedone
Method for catalytically synthesizing dihydro-chromene [4, 3-b] benzopyrone by aid of easily degradable ionic liquid
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Paragraph 0046; 0047; 0048, (2016/10/17)
The invention discloses a method for catalytically synthesizing dihydro-chromene [4, 3-b] benzopyrone by the aid of easily degradable ionic liquid, and belongs to the technical field of organic chemical synthesis. The method includes that a molar ratio of
Fe(DS)3, an efficient Lewis acid-surfactant-combined catalyst (LASC) for the one pot synthesis of chromeno[4,3-b]chromene derivatives by assembling the basic building blocks
Pradhan, Koyel,Paul, Sanjay,Das, Asish R.
, p. 3105 - 3110 (2013/06/26)
A highly efficient multicomponent heteroannulation protocol for the synthesis of a library of chromeno[4,3-b]chromene derivative has been developed by applying a Lewis acid-surfactant-combined catalyst (LASC) [Fe(DS) 3]. The LASC converted the initially floating reaction mass into a homogeneous mixture, which on stirring became a turbid emulsion of colloidal aggregates. The shape and size of the colloidal aggregates are confirmed by optical microscopy and DLS. The aqueous reaction medium, dual role of the catalyst in aqueous media, easy recovery of the catalyst, and high yield make the protocol attractive, sustainable, and economical.
Efficient one-pot synthesis of tetrahydrobenzo[c]xanthene-1,11-dione derivatives under microwave irradiation
Sun, Xiao-Jun,Zhou, Jian-Feng,Zhi, San-Jun
experimental part, p. 1987 - 1994 (2012/06/04)
An efficient one-pot condensation of 4-hydroxylcoumarin, aromatic aldehydes, and 5,5-dimethylcyclohexane-1,3-dione has been achieved with molecular iodine as a catalyst via conventional heating and microwave irradiation techniques, and thus a variety of n
A novel sulfonic acid functionalized ionic liquid catalyzed multicomponent synthesis of 10,11-dihydrochromeno[4,3-b]chromene-6,8(7H,9H)-dione derivatives in water
Chen, Zhiwei,Zhu, Qiang,Su, Weike
experimental part, p. 2601 - 2604 (2011/06/19)
Three-component reactions of 4-hydroxycoumarin, aldehydes, and cyclic 1,3-dicarbonyl compounds were prompted by novel sulfonic acid functionalized ionic liquids 1,3-dimethyl-2-oxo-1,3-bis(4-sulfobutyl)imidazolidine-1,3-diium hydrogen sulfate ([DMDBSI]·2HS
