- Green multicomponent reaction for synthesis of trisubstituted pyrroles in ionic liquid [bmim]BF4
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2,4,5-Trisubstituted pyrrole derivatives were efficiently synthesized by one-pot condensation of 1,3-diones, α-bromoacetophenones, and ammonium acetate in ionic liquid [bmim]BF4. The new synthetic method offers multisubstituted pyrroles with th
- Reddy, G. Narshimha,Likhar, Pravin R.
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p. 6873 - 6879
(2016/08/25)
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- I2-DMSO promoted metal free oxidative cyclization for the synthesis of substituted Indoles and pyrroles
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A series of di substituted indole and tri substituted pyrrole derivatives were synthesized efficiently by using I2/K2CO3 in DMSO. The novel synthesis method offers the advantage of mild reaction conditions, operational simplicity, higher yields. The method is functional group tolerant and provides quick access to medicinally significant compounds in moderate to high yields.
- Ramakrishnam Raju, Addada,Venkata Reddy, Regalla,Mallikarjuna Rao, Vajja,Venkata Naresh, Vema,Venkateswara Rao, Anna
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p. 2838 - 2841
(2016/06/14)
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- Microwave-assisted facile synthesis of trisubstituted pyrrole derivatives
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We report efficient synthesis of pyrrole derivatives by use of microwave irradiation. Quantitative yields were obtained in short reaction times. Low yields of product were obtained from alicyclic amino unsaturated ketone derivatives; higher yields were ob
- Hanuman Reddy,Mallikarjuna Reddy,Thirupalu Reddy,Rami Reddy
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p. 9805 - 9815
(2015/03/14)
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- Infrared heat aided solid state synthesis of pyrroles from 1,4-diketones and ammonium acetate
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A facile amination of 1,4-diketones with ammonium acetate has been achieved by mechanochemical grinding assisted by infrared irradiation in the presence of silica gel. The wastes are reduced and the energy resources saved..
- Zhang, Chun,Wang, Jian,Li, Jing-Hua
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experimental part
p. 204 - 207
(2012/04/17)
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- Multicomponent approach towards the synthesis of substituted pyrroles under supramolecular catalysis using β-cyclodextrin as a catalyst in water under neutral conditions
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Synthesis of substituted pyrroles in H2O by using β-cyclodextrin as a supramolecular catalyst is described. This reaction has several advantages over existing methods and provides substituted pyrroles in good-to-excellent yields (79-89%). The s
- Murthy, Sabbavarapu Narayana,Madhav, Bandaru,Kumar, Akkiligunta Vijay,Rao, Kakulapati Rama,Nageswar, Yadavalli Venkata Durga
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experimental part
p. 2118 - 2124
(2009/12/26)
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- Mn(III)-catalyzed synthesis of pyrroles from vinyl azides and 1,3-dicarbonyl compounds
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(Chemical Equation Presented) Polysubstituted N-H pyrroles with a wide variety of substituents were prepared from vinyl azides and 1,3-dicarbonyl compounds by using Mn(III) complexes as catalysts.
- Wang, Yi-Feng,Ton, Kah Kah,Chiba, Shunsuke,Narasaka, Koichi
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supporting information; scheme or table
p. 5019 - 5022
(2009/05/07)
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- Synthesis of polysubstituted N-H pyrroles from vinyl azides and 1,3-dicarbonyl compounds
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(Chemical Equation Presented) Two synthetic methods for tetra- and trisubstituted N-H pyrroles are presented: (i) the thermal pyrrole formation by the reaction of vinyl azides with 1,3-dicarbonyl compounds via the 1,2-addition of 1,3-dicarbonyl compounds to 2H-azirine intermediates generated in situ from vinyl azides; (ii) the Cu(II)-catalyzed synthesis of pyrroles from α-ethoxycarbonyl vinyl azides and ethyl acetoacetate through the 1,4-addition reaction of the acetoacetate to the vinyl azides. By applying these two methods, regioisomeric pyrroles can be prepared selectively starting from the same vinyl azides.
- Chiba, Shunsuke,Wang, Yi-Feng,Lapointe, Guillaume,Narasaka, Koichi
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p. 313 - 316
(2008/09/19)
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- Oxidative Halogenation of Substituted Pyrroles with Cu(II). Part I. Bromination of some 3-Acetylpyrroles
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3-Acetylpyrroles are brominated with copper(II) bromide.The reaction afforded almost quantitatively only nuclear monobromination.Evidence for the structures of final compounds was by mass spectrometry, 1H-nuclear magnetic resonance, ir, and elemental analysis.
- Petruso, S.,Caronna, S.,Sprio, V.
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p. 1209 - 1211
(2007/10/02)
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- POLYCONDENSED NITROGEN HETEROCYCLES. PART XIV. REACTIVITY OF 3-DIAZOPYRROLES: PYRROLOPYRIDAZINE
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3-Diazopyrroles 2a,b were prepared in excellent yields by diazotization of the corresponding amines 1a,b.Compounds 2a,b, by acid catalyzed intramolecular coupling reaction led to the new ring system pyrrolopyridazine 3a,b.
- Dattolo, Gaetano,Cirrincione, Girolamo,Almerico, Anna Maria,Aiello, Enrico
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p. 255 - 262
(2007/10/02)
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