Facile synthesis of isoxazoles and pyrazoles from ß-diketohydrazones JO - Journal of the Chilean Chemical Society A1 - SN - VL - 54 Y1 - 2009 SP - 267 EP - 268 PB - scielocl ER -

Regioselective synthesis of 3(or 5)-styryl-/(4-aryl-1,3-butadienyl)-/(6-aryl-1,3,5-hexatrienyl)-5(or 3)-(methylthio)isoxazoles and pyrazoles via α-oxoketene dithioacetals

Purkayastha, M. L.
Patro, B.
Ila, H.
Junjappa, H.

September 1991

The regioselective synthesis of the title isoxazoles and pyrazoles through cyclocondensation of oxok...

Divergent Construction of Pyrazoles via Michael Addition of N‑Arylhydrazones to 1,2-Diaza-1,3-dienes

Serena Mantenuto (1617451)
Fabio Mantellini (1617445)
Gianfranco Favi (1617454)
Orazio A. Attanasi (1617448)

April 2015

The base (NaH)-promoted Michael addition of N-arylhydrazones (AHs) with 1,2-diaza-1,3-dienes ...

A novel one-pot, three-component reaction for the synthesis of isocoumarin-condensed pyrazoles

OZCAN, Sevil
Dengiz, Çağatay
DELIOMEROGLU, Murat K.
ŞAHİN, Ertan
BALCI, METİN

March 2011

The one-pot, three-component reaction of substituted homophthalic anhydrides with hydrazine in DMF a...

Facile synthesis of isoxazoles and pyrazoles from ß-diketohydrazones

Bustos, Carlos
Schott, Eduardo
Ríos, Marcela
Sánchez, Christian
Cárcamo, Juan-Guillermo

January 2009

Indexación: ScieloNew 3,5-dimethyl-4-[(E)-4-(R1-phenyl)diazenyl]isoxazoles and 3,5-dimethyl-1-(R2-ph...

Synthesis of substituted isoxazoles and pyrazoles from α-α-dioxoketen dithioacetals under solvothermal conditions

Musad, Ebraheem Abdu
Rai, K. M. Lokanatha

January 2010

Some new 3,4,5-substituted isoxazoles, 3,4,5 and 1,3,4,5-substituted pyrazoles were prepared by reac...

Synthesis of pyrazole and isoxazole in triethanolamine medium.

Agrawal, Nitin N
Soni, P A

March 2007

532-534Reactions of 2′-hydroxy chalcone dibromides 2a-l with phenyl hydrazine and hydrazine hydrate ...

The synthesis and reactions of novel pyrazole derivatives by 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandione reacted with some hydrazones

Erdem, Ahmet Burak
Genc, H.
Sen, N.
Kılınçarslan, Rafet
Erdem, Emin

January 2017

We report some novel pyrazole derivatives taking 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandion...

Hydrazones

Erdem, A
Genc, H
Sen, N
Kilincarslan, R
Erdem, E

January 2017

We report some novel pyrazole derivatives taking 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandion...

Chemistry of Heterocycles. Part-IX Synthesis of lsoxazolylpyrazolones

K. MALLA REDDI
C. JANAKIRAMA RAO
A. KRISHNA MURTHY

March 1985

Department of Chemistry, Kakatiya University, Warangal-506 009 Manuscript received 20 September 198...

Pyrazin-2(1H)-ones from 3,4-disubstituted 4-aminoisoxazol-5(4H)-ones

E.M. Beccalli
A. Marchesini

January 1991

A new synthesis for 3,5,6-trisubstituted pyrazin-2(1H)-ones from 3,4-disubstituted 4-(phenyloxalylam...

Imidazoles and pyrrolo[2,3-d]isoxazoles from isoxazol-5(4H)-ones

E.M. Beccalli
A. Marchesini
T. Pilati

January 1991

Synthesis for imidazoles and pyrrolo[2,3-d]isoxazoles from 3,4-disubstituted 4-aminoisoxazol-5(4H)-o...

(E)-3-Halo-2-styryl-4H-chromen-4-ones: Synthesis and transformation to novel pyrazoles

Ferreira, J. P. A.
Silva, V. L. M.
Elguero, José
Silva, A. M. S.

November 2013

New methods for the synthesis of (E)-3-halo-2-styryl-4H-chromen-4-ones were established. The reactio...

Synthesis of novel isoxazolines and isoxazoles of N-substituted pyrazolo[3,4-d]pyrimidin-4(5H)-one derivatives through [3+2] cycloaddition

Rahmouni, Ameur
Romdhane, Anis
Ben said, Abderrahim
Guérineau, Vincent
Touboul, David
Ben Jannet, Hichem

December 2014

Abstract3,6-Dimethyl-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one 3 was prepared by an intramolecu...

Efficient One-Pot, Two-Component Modular Synthesis of 3,5-Disubstituted Pyrazoles

Samy Mohamady (1393861)
Braden Kralt (3350936)
Shery K. Samwel (5978354)
Scott D. Taylor (1393864)

November 2018

The pyrazole scaffold is one of the most prevalent and important tool in medicinal chemistry. Here, ...

A new synthetic entry to 3-carboxamido-4-carboxylic acid derivatives of isoxazole and pyrazole

C. Vicentini
M. Mazzanti
C. F. Morelli
M. Manfrini

January 2000

Ethyl 2-amino-3-methoxycarbonyl-4-oxo-2-pentenoate (3) reacts with hydroxylamine or hydrazines to gi...

Regioselective synthesis of 3(or 5)-styryl-/(4-aryl-1,3-butadienyl)-/(6-aryl-1,3,5-hexatrienyl)-5(or 3)-(methylthio)isoxazoles and pyrazoles via α-oxoketene dithioacetals

Purkayastha, M. L.
Patro, B.
Ila, H.
Junjappa, H.

September 1991

The regioselective synthesis of the title isoxazoles and pyrazoles through cyclocondensation of oxok...

Divergent Construction of Pyrazoles via Michael Addition of N‑Arylhydrazones to 1,2-Diaza-1,3-dienes

Serena Mantenuto (1617451)
Fabio Mantellini (1617445)
Gianfranco Favi (1617454)
Orazio A. Attanasi (1617448)

April 2015

The base (NaH)-promoted Michael addition of N-arylhydrazones (AHs) with 1,2-diaza-1,3-dienes ...

A novel one-pot, three-component reaction for the synthesis of isocoumarin-condensed pyrazoles

OZCAN, Sevil
Dengiz, Çağatay
DELIOMEROGLU, Murat K.
ŞAHİN, Ertan
BALCI, METİN

March 2011

The one-pot, three-component reaction of substituted homophthalic anhydrides with hydrazine in DMF a...

Facile synthesis of isoxazoles and pyrazoles from ß-diketohydrazones

Bustos, Carlos
Schott, Eduardo
Ríos, Marcela
Sánchez, Christian
Cárcamo, Juan-Guillermo

January 2009

Indexación: ScieloNew 3,5-dimethyl-4-[(E)-4-(R1-phenyl)diazenyl]isoxazoles and 3,5-dimethyl-1-(R2-ph...

Synthesis of substituted isoxazoles and pyrazoles from α-α-dioxoketen dithioacetals under solvothermal conditions

Musad, Ebraheem Abdu
Rai, K. M. Lokanatha

January 2010

Some new 3,4,5-substituted isoxazoles, 3,4,5 and 1,3,4,5-substituted pyrazoles were prepared by reac...

Synthesis of pyrazole and isoxazole in triethanolamine medium.

Agrawal, Nitin N
Soni, P A

March 2007

532-534Reactions of 2′-hydroxy chalcone dibromides 2a-l with phenyl hydrazine and hydrazine hydrate ...

The synthesis and reactions of novel pyrazole derivatives by 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandione reacted with some hydrazones

Erdem, Ahmet Burak
Genc, H.
Sen, N.
Kılınçarslan, Rafet
Erdem, Emin

January 2017

We report some novel pyrazole derivatives taking 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandion...

Hydrazones

Erdem, A
Genc, H
Sen, N
Kilincarslan, R
Erdem, E

January 2017

We report some novel pyrazole derivatives taking 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandion...

Chemistry of Heterocycles. Part-IX Synthesis of lsoxazolylpyrazolones

K. MALLA REDDI
C. JANAKIRAMA RAO
A. KRISHNA MURTHY

March 1985

Department of Chemistry, Kakatiya University, Warangal-506 009 Manuscript received 20 September 198...

Pyrazin-2(1H)-ones from 3,4-disubstituted 4-aminoisoxazol-5(4H)-ones

E.M. Beccalli
A. Marchesini

January 1991

A new synthesis for 3,5,6-trisubstituted pyrazin-2(1H)-ones from 3,4-disubstituted 4-(phenyloxalylam...

Imidazoles and pyrrolo[2,3-d]isoxazoles from isoxazol-5(4H)-ones

E.M. Beccalli
A. Marchesini
T. Pilati

January 1991

Synthesis for imidazoles and pyrrolo[2,3-d]isoxazoles from 3,4-disubstituted 4-aminoisoxazol-5(4H)-o...

(E)-3-Halo-2-styryl-4H-chromen-4-ones: Synthesis and transformation to novel pyrazoles

Ferreira, J. P. A.
Silva, V. L. M.
Elguero, José
Silva, A. M. S.

November 2013

New methods for the synthesis of (E)-3-halo-2-styryl-4H-chromen-4-ones were established. The reactio...

Synthesis of novel isoxazolines and isoxazoles of N-substituted pyrazolo[3,4-d]pyrimidin-4(5H)-one derivatives through [3+2] cycloaddition

Rahmouni, Ameur
Romdhane, Anis
Ben said, Abderrahim
Guérineau, Vincent
Touboul, David
Ben Jannet, Hichem

December 2014

Abstract3,6-Dimethyl-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one 3 was prepared by an intramolecu...

Efficient One-Pot, Two-Component Modular Synthesis of 3,5-Disubstituted Pyrazoles

Samy Mohamady (1393861)
Braden Kralt (3350936)
Shery K. Samwel (5978354)
Scott D. Taylor (1393864)

November 2018

The pyrazole scaffold is one of the most prevalent and important tool in medicinal chemistry. Here, ...

A new synthetic entry to 3-carboxamido-4-carboxylic acid derivatives of isoxazole and pyrazole

C. Vicentini
M. Mazzanti
C. F. Morelli
M. Manfrini

January 2000

Ethyl 2-amino-3-methoxycarbonyl-4-oxo-2-pentenoate (3) reacts with hydroxylamine or hydrazines to gi...

Regioselective synthesis of 3(or 5)-styryl-/(4-aryl-1,3-butadienyl)-/(6-aryl-1,3,5-hexatrienyl)-5(or 3)-(methylthio)isoxazoles and pyrazoles via α-oxoketene dithioacetals

Purkayastha, M. L.
Patro, B.
Ila, H.
Junjappa, H.

September 1991

The regioselective synthesis of the title isoxazoles and pyrazoles through cyclocondensation of oxok...

Divergent Construction of Pyrazoles via Michael Addition of N‑Arylhydrazones to 1,2-Diaza-1,3-dienes

Serena Mantenuto (1617451)
Fabio Mantellini (1617445)
Gianfranco Favi (1617454)
Orazio A. Attanasi (1617448)

April 2015

The base (NaH)-promoted Michael addition of N-arylhydrazones (AHs) with 1,2-diaza-1,3-dienes ...

A novel one-pot, three-component reaction for the synthesis of isocoumarin-condensed pyrazoles

OZCAN, Sevil
Dengiz, Çağatay
DELIOMEROGLU, Murat K.
ŞAHİN, Ertan
BALCI, METİN

March 2011

The one-pot, three-component reaction of substituted homophthalic anhydrides with hydrazine in DMF a...

Facile synthesis of isoxazoles and pyrazoles from ß-diketohydrazones JO - Journal of the Chilean Chemical Society A1 - SN - VL - 54 Y1 - 2009 SP - 267 EP - 268 PB - scielocl ER -

Abstract

Extracted data

Facile synthesis of isoxazoles and pyrazoles from ß-diketohydrazones JO - Journal of the Chilean Chemical Society A1 - SN - VL - 54 Y1 - 2009 SP - 267 EP - 268 PB - scielocl ER -

Abstract

Extracted data

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