6339-79-3Relevant academic research and scientific papers
Solid acid TS-1 catalyst: an efficient catalyst in Knoevenagel condensation for the synthesis of 5-arylidene-2,4-thiazolidinediones/Rhodanines in aqueous medium
Gadekar, Sachin P.,Dipake, Sudarshan S.,Gaikwad, Suresh T.,Lande, Machhindra K.
, p. 7509 - 7518 (2018/09/06)
Abstract: TS-1 zeolite was prepared for the synthesis of 5-arylidene-2,4-thiazolidinediones/Rhodanines in aqueous medium by incorporating titanium(IV) cations in a silicate-1 framework using hydrothermal treatment and characterized by using XRD, EDX, BET, FT-IR and SEM techniques. The catalytic activity of the catalyst was tested for Knoevenagel condensation reaction. The condensation of active ethylene 2,4-thiazolidinedione with substituted aryl aldehydes under aqueous medium at 90?°C afforded the corresponding product in excellent yield up to 92% within 30?min. The present method offers several advantages over the reported methods such as easy separation of catalyst, simple work-up procedure, and an excellent yield of desired product. Furthermore, the catalyst could be reused without significant loss in activity. Graphical abstract: [Figure not available: see fulltext.]
Design and microwave facilitated green synthesis of 2-[4-(3-carboxymethyl, methoxy carbonylmethyl-2,4-dioxo and 4-oxo-2-thioxo-thiazolidin-5-ylidenemethyl)-phenoxy]-2 and 3-methyl propionic acid ethyl ester derivatives: a novel structural class of antidys
Kumar Singh, Ashok,Tripathi, Avinash C.,Tewari, Aseem,Chawla, Viney,Saraf, Shailendra K.
, p. 1535 - 1549 (2017/06/05)
An interesting hybrid molecular framework comprising of benzylidenethiazolidin-4-one, chalcone and fibrate was designed and synthesized (BRF1–12) in order to develop safe and efficacious compounds for the treatment of dyslipidemia, and related complicatio
Green synthesis of 5 arylidene-2,4-thiazolidinedione, 5-benzylidene rhodanine and dihydrothiophene derivatives catalyzed by hydrated ionic liquid tetrabutylammonium hydroxide in aqueous medium
Khazaei, Ardeshir,Veisi, Hojat,Safaei, Maryam,Ahmadian, Hossein
, p. 270 - 278 (2014/04/03)
An efficient synthesis of 5 arylidene-2,4-thiazolidinediones and 5-benzylidene rhodanines by the Knoevenagel condensation of 2,4- thiazolidinedione or rhodanine with aromatic aldehydes was studied. It proceeded smoothly in the presence of tetrabutylammonium hydroxide/H2O-EtOH to afford the corresponding products in high yields at 50C. Also, a series of dihydrothiophene derivatives were synthesized via the four-component reaction of aldehyde, malonitrile, 2,4-thiazolidinedione, and piperidine in the presence of Bu4NOH as a basic ionic liquid in aqueous medium. This new method offers several advantages, such as excellent yields, short reaction times, and simple procedure(Equation presented). 2013
Urea/thiourea catalyzed, solvent-free synthesis of 5-arylidenethiazolidine- 2,4-diones and 5-arylidene-2-thioxothiazolidin-4-ones
Shah, Sakshi,Singh, Baldev
experimental part, p. 5388 - 5391 (2012/09/22)
An efficient and organo-catalyzed method has been developed for the synthesis of 5-arylidenethiazolidine-2,4-diones and 5-arylidene-2- thioxothiazolidin-4-ones via Knoevenagel condensation of arylaldehydes 1 and 2,4-thiazolidinedione 2a/2-thioxothiazolidin-4-one 2b under mild conditions. Urea-adduct 4 and azomethine 5 also afford arylidene-products 3 by reacting with 2a-b via addition-elimination reaction. This protocol has the features of use of inexpensive, ecofriendly readily available, effective catalyst system viz. urea/thiourea, avoidance of volatile solvents, excellent yield and simple work-up procedure.
Evaluation of dihydropyrimidin-(2H)-one analogues and rhodanine derivatives as tyrosinase inhibitors
Liu, Jinbing,Wu, Fengyan,Chen, Lingjuan,Hu, Jianming,Zhao, Liangzhong,Chen, Changhong,Peng, Liwang
supporting information; experimental part, p. 2376 - 2379 (2011/05/15)
A series of dihydropyrimidin-(2H)-one analogues and rhodanine derivatives were synthesized and their inhibitory effects on the diphenolase activity of mushroom tyrosinase were evaluated. The results showed that some of the synthesized compounds exhibited
Green synthesis of 5-benzylidene rhodanine derivatives catalyzed by 1-butyl-3-methyl imidazolium hydroxide in water
Gong, Kai,He, Zhi-Wei,Xu, Ying,Fang, Dong,Liu, Zu-Liang
experimental part, p. 913 - 915 (2009/09/06)
A basic functionalized ionic liquid, 1-butyl-3-methyl imidazolium hydroxide ([bmim][OH]), catalyzed the Knoevenagel condensation of rhodanine with aromatic aldehydes. It proceeded smoothly in water to afford the 5-benzylidene rhodamine derivatives in high yields at room temperature. This new method offers several advantages, such as excellent yields, short reaction times, and simple procedure. The catalyst can be reused at least 5 times without significant loss of activity.
New methacrylic oxazolone and thiazolidinone containing polymers for nonlinear opticalApplications
Smokal, Vitaliy,Kolendo, Aleksey,Krupka, Oksana,Derkowska, Beata,Czaplicki, Robert,Sahraoui, Bouchta
experimental part, p. 263/[1011]-270/[1018] (2009/10/11)
Oxazalone and thiazolidinone derivatives were synthesized and their physicochemical properties are determined by absorption, HNMR spectroscopies. The third order nonlinear optical properties of oxazolone and thiazolidinone containing compounds were investigated in solutions using degenerate four wave mixing (DFWM) method at 532 nm.
Facile synthesis of 5-benzylidene rhodamine derivatives under microwave irradiation
Zhou, Jian-Feng,Song, Yuan-Zhi,Zhu, Feng-Xia,Zhu, Yu-Lan
, p. 3297 - 3303 (2007/10/03)
A series of 5-benzylidenerhodamine derivatives were synthesized by the cross-aldol condensation of an aromatic aldehyde with rhodamine or rhodamine acetic acid in sodium acetate/acetic acid under microwave irradiation. The reaction was completed in 8-20 min with 63-94% yields and was environmentally benign with easy workup. Copyright Taylor & Francis Group, LLC.
Synthetic inhibitor of leaf-closure that reveals the biological importance of leaf-movement for the survival of leguminous plants
Kato, Eisuke,Nagano, Hideharu,Yamamura, Shosuke,Ueda, Minoru
, p. 5909 - 5917 (2007/10/03)
Nyctinasty has been known since pre-Christian era, whereas the question 'Why do leguminous plants sleep?' has always puzzled scientists. This paper gives a clue to the historical mystery: by using synthetic inhibitors for nyctinasty, we found that legumes cannot survive without nyctinasty.
