84302-11-4Relevant articles and documents
A co-operative effect of visible light photo-catalysis and CoFe2O4 nanoparticles for green synthesis of furans in water
Verma, Fooleswar,Singh, Puneet K.,Bhardiya, Smita R.,Singh, Manorama,Rai, Ankita,Rai, Vijai K.
supporting information, p. 4937 - 4942 (2017/07/12)
A novel approach to poly-functionalized furan synthesis is disclosed via oxidative decarboxylative [3+2] cycloaddition using co-operative catalysis by visible light and CoFe2O4 nanoparticles under ambient reaction conditions with water as a solvent. Although the reported method is efficient without catalyst in the presence of visible light (70% yield in 4 h at rt), the use of catalyst not only increases the yield (91%) but also accelerates the conversion rate (2 h at rt).
Copper-Catalyzed Regioselective Synthesis of Multisubstituted Furans by Coupling between Ketones and Aromatic Olefins
Dey, Amrita,Ali, Md Ashif,Jana, Sourav,Hajra, Alakananda
, p. 4812 - 4818 (2017/05/12)
A regioselective synthesis of multisubstituted furan derivatives has been developed via Cu(II)-catalyzed intermolecular annulation of aryl ketones with a wide range of aromatic olefins under ambient air in good yields. This protocol is applicable to both cyclic and acyclic aryl ketones.
Domino Radical Addition/Oxidation Sequence with Photocatalysis: One-Pot Synthesis of Polysubstituted Furans from α-Chloro-Alkyl Ketones and Styrenes
Wang, Shuang,Jia, Wen-Liang,Wang, Lin,Liu, Qiang,Wu, Li-Zhu
supporting information, p. 13794 - 13798 (2016/09/21)
A new domino reaction has been developed that allows the combination of styrenes and α-alkyl ketone radicals to afford a wide array of polysubstituted furans in good to excellent yields under mild and simple reaction conditions. The key to success of this novel protocol is the use of photocatalyst fac-Ir(ppy)3and oxidant K2S2O8. Mechanistic studies by a radical scavenger and photoluminescence quenching suggest that a radical addition/oxidation pathway is operable.
Regioselective Synthesis of Multisubstituted Furans via Copper-Mediated Coupling between Ketones and β-Nitrostyrenes
Ghosh, Monoranjan,Mishra, Subhajit,Hajra, Alakananda
, p. 5364 - 5368 (2015/05/27)
A copper-mediated intermolecular annulation of alkyl ketones and β-nitrostyrenes has been developed for the regioselective synthesis of multisubstituted furan derivatives in good yields. This protocol is applicable to both cyclic and acyclic ketones. (Che
Successively recycle waste as catalyst: A one-pot wittig/1,4-reduction/paal-knorr sequence for modular synthesis of substituted furans
Chen, Long,Du, Yi,Zeng, Xing-Ping,Shi, Tao-Da,Zhou, Feng,Zhou, Jian
supporting information, p. 1557 - 1560 (2015/03/30)
A one-pot tandem Wittig/conjugate reduction/Paal-Knorr reaction is reported for the synthesis of di- or trisubstituted furans. This novel sequence first demonstrates the possibility of successively recycling waste from upstream steps to catalyze downstream reactions.
Copper-catalyzed regioselective synthesis of furan via tandem cycloaddition of ketone with an unsaturated carboxylic acid under air
Ghosh, Monoranjan,Mishra, Subhajit,Monir, Kamarul,Hajra, Alakananda
, p. 309 - 314 (2015/01/16)
A catalytic decarboxylative annulation has been developed for the regioselective synthesis of trisubstituted furans by the cycloaddition of ketones with α,β-unsaturated carboxylic acids under ambient air. A library of furan derivatives were obtained in good yields from the readily available substrates in the combination of a catalytic amount of Cu-salt and a stoichiometric amount of water. Water plays a crucial role in this catalytic transformation. This journal is
Synthesis of furans and pyrroles via migratory and double migratory cycloisomerization reactions of homopropargylic aldehydes and imines
Kazem Shiroodi, Roohollah,Rivera Vera, Claudia I.,Dudnik, Alexander S.,Gevorgyan, Vladimir
, p. 3251 - 3254 (2015/02/19)
A novel gold-catalyzed divergent synthesis of furans and pyrroles employing readily available homopropargylic aldehydes and imines has been developed. The regiochemical outcome of this reaction is dependent on the substituent on the terminal alkyne of sub
A highly efficient and broadly applicable cationic gold catalyst
Malhotra, Deepika,Mashuta, Mark S.,Hammond, Gerald B.,Xu, Bo
supporting information, p. 4456 - 4459 (2014/05/06)
Gold catalysts capable of promoting reactions at low-level loadings under mild conditions are the exception rather than the norm. We examined reactions where the regeneration of cationic gold catalyst (e.g., protodeauration) was the turnover limiting stag
Cationic gold catalyst poisoning and reactivation
Kumar, Manish,Hammond, Gerald B.,Xu, Bo
supporting information, p. 3452 - 3455 (2014/07/21)
High gold affinity impurities (halides, bases) in solvents, starting materials, filtration, or drying agents could affect the reactivity of gold catalyst adversely, which may significantly reduce the TON of cationic gold-catalyzed reactions. Use of a suit
Enhanced reactivity in Homogeneous Gold catalysis through Hydrogen bonding
Wang, Weibo,Kumar, Manish,Hammond, Gerald B.,Xu, Bo
, p. 636 - 639 (2014/04/03)
Additives that are good hydrogen-bond acceptors increase the efficiency of gold-catalyzed reactions in those instances where protodeauration is the rate-determining step. The efficiency of additives capable of hydrogen-bonding-assisted protodeauration correlated with their standing in a scale of hydrogen bonding basicity (measured by pKBHX). All additives used in the study are commercially available.
