105263-07-8Relevant articles and documents
Tetramethylguanidine-[bmim][BF4]. An efficient and recyclable catalytic system for one-pot synthesis of 4H-pyrans
Peng, Yanqing,Song, Gonghua,Huang, Feifei
, p. 727 - 731 (2005)
A clean and efficient method for the synthesis of 4H-pyran derivatives through the one-pot condensation of aromatic aldehydes, malononitriles, and β-dicarbonyl compounds, using guanidine base tetramethylguanidine in [bmim] [BF4] ionic liquid as
Efficient deep eutectic solvents catalyzed synthesis of pyran and benzopyran derivatives
Azizi, Najmedin,Dezfooli, Sahar,Khajeh, Meysam,Hashemi, Mohammad Mahmoudi
, p. 76 - 80 (2013)
An ecofriendly one-pot multicomponent reaction of 1,3-dicarbonyl compounds, aldehydes, and malononitrile was carried out in a different deep eutectic solvent (DES) based on choline chloride, to synthesize highly functionalized benzopyran and pyran derivat
Baker's yeast catalyzed one-pot three-component synthesis of polyfunctionalized 4H-pyrans
Pratap, Umesh R.,Jawale, Dhanaji V.,Netankar, Prashant D.,Mane, Ramrao A.
, p. 5817 - 5819 (2011)
Baker's yeast catalyzed one-pot three-component cyclocondensation of aryl aldehydes, malononitrile, and b-dicarbonyls in organic medium has been carried out to obtain polyfunctionalized 4H-pyrans. The reaction has been carried out at room temperature in o
Efficient Three-Component One-Pot Synthesis of 4H-Pyrans
Malviya,Kala,Sharma,Singh
, p. 686 - 693 (2019)
Clean, practical, and efficient electrochemical synthesis of pharmaceutically relevant 4H-pyran derivatives by one-pot three-component combination of an aryl aldehyde, malononitrile, and a dicarbonyl compoundis developed. The synthesis is performed in eth
Ferric Sulfasalazine Sulfa Drug Complex Supported on Cobalt Ferrite Cellulose; Evaluation of Its Activity in MCRs
Rostamizadeh, Shahnaz,Daneshfar, Zahra,Khazaei, Ali
, p. 2091 - 2114 (2020/01/31)
Abstract: The green and nano catalyst was simply prepared through the reaction of ferric sulfasalazine with nanomaterial CoFe2O4-cellulose as a magnetic biopolymer surface. This novel heterogeneous organometallic catalyst was charact
Organocatalytic mediated green approach: A versatile new L-valine promoted synthesis of diverse and densely functionalized 2-amino-3-cyano-4H-pyrans
Tiwari, Jyoti,Singh, Swastika,Saquib, Mohammad,Tufail, Fatima,Sharma, Amit Kumar,Singh, Shailesh,Singh, Jaya,Singh, Jagdamba
supporting information, p. 188 - 196 (2018/01/01)
The discovery of a new L-valine promoted facile and versatile green synthesis of diversified 2-amino-3-cyano-4H-pyrans using a one pot multicomponent-tandem reaction of aromatic aldehydes, malononitrile, and diverse electron-rich enolizable carbonyl compo
Preparation of a superior liquid catalyst by hybridization of three solids of nanoZnO, urea, and choline chloride for Knoevenagel-based reactions
Tamaddon, Fatemeh,Azadi, Davood
, p. 2077 - 2086 (2017/09/13)
Abstract: The complex catalyst of [ZnClO.urea]?[Ch.urea]+ has been prepared by dissolving of nanoZnO in choline chloride:2urea at 50 °C. The concentration of [ZnClO.urea]? in the given liquid is 19,987 ppm and 10.5 times h
Nano crystalline ZnO catalyzed one pot multicomponent reaction for an easy access of fully decorated 4H-pyran scaffolds and its rearrangement to 2-pyridone nucleus in aqueous media
Bhattacharyya, Pranabes,Pradhan, Koyel,Paul, Sanjay,Das, Asish R.
supporting information; experimental part, p. 4687 - 4691 (2012/09/05)
A green and highly efficient protocol has been developed for the synthesis of 4H-pyran scaffolds installing a one-pot three-component coupling reaction of an aldehyde, malononitrile, and a 1,3-diketo compound using nano structured ZnO as the catalyst in a
Electrophilicity parameters for benzylidenemalononitriles
Lemek, Tadeusz,Mayr, Herbert
, p. 6880 - 6886 (2007/10/03)
Kinetics of the reactions of stabilized carbanions (derived from nitroethane, diethyl malonate, ethyl cyanoacetate, ethyl acetoacetate, acetyl acetone) with benzylidenemalononitriles have been determined in dimethyl sulfoxide solution at 20 °C. The second-order rate constants are employed to determine the electrophilicity parameters E of the benzylidenemalononitriles according to the correlation equation log k (20 °C) = s(E + N). Comparison with literature data shows that this equation allows the semiquantitative prediction of the reactivities of benzylidenemalononitriles toward a wide variety of nucleophiles, including carbanions, enamines, amines, water, and hydroxide.
REACTIONS OF SIX-MEMBERED HETEROCYCLIC β-ENAMINONITRILES WITH ELECTROPHILIC REAGENTS
Zayed, Salem E.,Elmaged, Eiman I. Abou,Metwally, Saud A.,Elnagdi, Mohamed H.
, p. 2175 - 2182 (2007/10/02)
The nitriles I reacted with acetylacetone and with ethyl acetoacetate to afford 2-amino-3-cyano-4H-pyran derivatives.They reacted further to yield pyranopyridine derivatives.The reaction of V with acetylacetone afforded the pyridinethione VIII.This afford