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3,3'?((2?hydroxyphenyl)methylene)?bis?(4?hydroxy?2H?chromene?2?one) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

21549-90-6

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21549-90-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21549-90-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,5,4 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 21549-90:
(7*2)+(6*1)+(5*5)+(4*4)+(3*9)+(2*9)+(1*0)=106
106 % 10 = 6
So 21549-90-6 is a valid CAS Registry Number.

21549-90-6Downstream Products

21549-90-6Relevant academic research and scientific papers

Synthesis, photophysical properties, chemo-sensing ability and computational studies of biscoumarin derivatives

Harichandran, G.,Nehru, S.,Surya, C. P.

, (2021/09/20)

Synthesis of biscoumarin derivatives using an environment friendly,recyclable polymeric resin as catalyst via one-pot pseudo-three component reaction was simply achieved by using numerous substituted aromatic aldehydes (1 mM) and 4-hydroxycoumarin (2 mM)

Black yet green: A?heterogenous carbon-based acid catalyst for the synthesis of biscyclic derivatives under eco-friendly conditions

Teli, Pankaj,Sethiya, Ayushi,Agarwal, Shikha

, p. 731 - 750 (2021/12/09)

In this study, a simple, cost-efficient and green protocol has been described for the synthesis of biscoumarin and bisdimedone derivatives via one-pot Knoevenagel–Michael reaction of aromatic aldehydes with 4-hydroxycoumarin and dimedone, respectively. Th

Recyclable Amberlite IR-120 Catalyzed domino reaction: Synthesis, anticancer activity and molecular docking studies of biscoumarins

Harish, B. G.,Ismail,Shadakshari, A. J.,Sowmya, H. B. V.,Suresha Kumara, T. H.,Yamuna, A. J.

, (2021/08/10)

Under mild conditions, an environmentally friendly method has been developed for the synthesis of bis-coumarins by using a reasonably lesser quantity of Amberlite IR-120 through Domino Knoevenagel–Michael reaction. In which, a series of aryl aldehydes hav

Developing a highly potent anthelmintic: study of catalytic application of l-proline derived aminothiourea in rapid synthesis of biscoumarins and their in vitro anthelmintic essay

Kharrngi, Balamphrang,Dhar, Errini Decruse,Basumatary, Grace,Das, Dharitri,Deka, Ramesh Ch,Yadav, Arun K,Bez, Ghanashyam

, (2021/02/22)

Abstract: Due to serious side effects of benzimidazoles such as apoptosis and mitotic arrest, development of alternative anthelmintic drugs with comparable efficacy to target the acetylcholine receptors of parasites is considered very important to control

Heterogeneous SO3H@Fe3O4 magnetic nanocatalyst as an efficient and reusable medium for the synthesis of 3,3′-(arylmethylene)-bis-(4-hydroxycoumarin), bis-(indolyl)-methane, and 1,8-dioxo-octahydroxanthene derivatives

Wu, Xiaobo,Peng, Wan-Xi

, p. 2129 - 2148 (2020/06/24)

This work aimed to synthesize a new heterogeneous catalyst (SO3H@Fe3O4 magnetic nanoparticles) and the study of its catalytic behavior in synthesizing 3,3′-(arylmethylene)-bis-(4-hydroxycoumarin), bis-(indolyl)-methane, an

Efficient synthesis of bis-(4-hydroxycoumarin) using sulfanilic acid as recyclable catalyst in water

SADAT-JALALI, Mozhgan,MANAFI, Mohammadreza,HOMAMI, Seyed Saied,GORJI, Banafsheh,MONZAVI, Amirhossein

, p. 473 - 480 (2020/10/06)

A catalytic reaction between aromatic aldehydes and 4- hydroxycoumarin has been developed to form a decent range of functionalized biscoumarin skeletons in excellent yields using sulfanilic acid as reusable catalyst in aqueous media. The catalytic reactio

Magnetic nanoparticles tris(hydrogensulfato) boron as an efficient heterogeneous acid catalyst for the synthesis of α,?-benzylidene bis(4-hydroxycoumarin) derivatives under solvent-free condition

Hayati, Payam,Eghbali, Khadijeh,Rezaei, Ramin

, p. 5067 - 5089 (2019/06/28)

Nano-ferrite supported tris(hydrogensulfato) boron [Fe3O4@B(HSO4)3] was prepared by entrapping Fe3O4 magnetic nanoparticles as the core and tris(hydrogensulfato) boron B(HSO4)su

Use of PS-Zn-anthra complex as an efficient heterogeneous recyclable catalyst for carbon dioxide fixation reaction at atmospheric pressure and synthesis of dicoumarols under greener pathway

Ghosh, Swarbhanu,Mondal, Paramita,Das, Debasis,Tuhina, Kazi,Islam, Sk. Manirul

, p. 1 - 12 (2018/04/16)

A polystyrene functionalized Zinc anthranilic acid complex catalyst has been prepared. The PS-Zn-anthra complex has been characterized by EDX, Scanning electron micrographs (FE-SEM), FTIR spectra, UV–vis spectra and thermogravimetric analyses. A greener a

Efficient synthesis of bis(indolyl)methanes, bispyrazoles and biscoumarins using 4-sulfophthalic acid

Banari, Hoda,Kiyani, Hamzeh,Pourali, Alireza

, p. 1635 - 1649 (2017/02/15)

4-Sulfophthalic acid (4-H3SPA) solution 50?wt% in H2O has been effectively catalyzed the synthesis of a series of biologically relevant bis(indolyl)methanes by the electrophilic substitution of indole derivatives on aldehyde compound

Zwitterionic liquid (ZIL) coated CuO as an efficient catalyst for the green synthesis of bis-coumarin derivatives: via one-pot multi-component reactions using mechanochemistry

Mayank,Singh, Amanpreet,Raj, Pushap,Kaur, Randeep,Singh, Ajnesh,Kaur, Navneet,Singh, Narinder

, p. 3872 - 3881 (2017/07/12)

A convenient, solvent free strategy for the synthesis of bis-coumarins has been developed using zwitterionic liquid (ZIL) coated copper oxide (CuO) and mechanical ball milling. The ZIL were fabricated from imidazolium/benzimidazolium and sulfonate/carboxy

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