6301-12-8Relevant academic research and scientific papers
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
Facile and convenient synthesis of 5-arylalkylidenerhodanines by electrocatalytic crossed aldol condensation
Veisi, Hojat,Vafajoo, Zahra,Maleki, Behrooz,Maghsoodlou, Malek Taher
, p. 672 - 677 (2013/07/26)
An electrochemically induced catalytic crossed Aldol condensation of one equivalent of rhodanine with various aromatic aldehydes and ketones in ethanol in an undivided cell in the presence of sodium bromide as an electrolyte results in the formation of th
Iodine catalysed synthesis of 5-(arylmethylidene)rhodanines by grinding under solvent-free conditions
Wang, Hongshe,Zeng, June
experimental part, p. 374 - 376 (2009/12/31)
5-(Arylmethylidene)rhodanines have been synthesised in 88-95% yields by Knoevenagel condensation of various aromatic aldehydes with rhodanine in the presence of a catalytic amount of iodine at room temperature by grinding under solvent-free conditions.
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.
LiBr catalyzed, microwave enhanced synthesis of 5-arylidene rhodanine under solvent free conditions
Saini, Anil,Bhatti, Ravinder S.,Sandhu, Jagir S.
experimental part, p. 1239 - 1241 (2009/12/31)
A variety of aldehydes are condensed with rhodaninc under solvent free conditions using LiBr affording 5-arylidene rhodanines in excellent yields. Also this reaction protocol in extendable to other related systems like pyrazol-5-one and 2,4-thiazolidinedi
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.
