José G. López‐Cortés

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/cc13fv9p

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Synthesis of New Polycyclic γ‐ and δ‐Lactones upon Activation of, and Nucleophilic Additions to, Diazines: Influence of the Activating Agents

European Journal of Organic Chemistry (2008)

Azucena Garduño-Alva Yiming Xu N. Gualo‐Soberanes José G. López‐Cortés H. Rudler

Abstract The reaction of bis(trimethylsilyl)ketene acetals 2 with N‐heterocycles containing either one or two nitrogen atoms in the presence of triflic anhydride has been examined and the structures of the resulting products compared with those obtained by using methyl chloroformate as the activating agent. Whereas pyridine, pyrazine, quinoxaline and pyrimidine led to the same type of fused δ‐ or γ‐lactones 4 , 6 , 8 , 10 and 11 as with methyl chloroformate, the behaviour of pyridazine appeared to be peculiar. In the presence of methyl chloroformate, this heterocycle led to δ‐lactones 16 via stable dihydropyridazines, with triflic anhydride, the direct formation of γ‐lactones 20 was observed. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

Chloroformate

Pyridazine

Trimethylsilyl

Ethyl chloroformate

Quinoxaline

Pyrazine

Annulation

10.1002/ejoc.200800338

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Citations (25)

CCDC 749830: Experimental Crystal Structure Determination

The Cambridge Structural Database (2013)

José G. López‐Cortés Antonio Morán Ramallal J. González Laura Roces Santiago García‐Granda

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/cct5829

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Citations (0)

CCDC 609400: Experimental Crystal Structure Determination

The Cambridge Structural Database (2006)

José G. López‐Cortés Sandrine Vincendeau J.‐C. Daran Éric Manoury M. Gouygou

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccng429

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Two-photon isomerization properties of donor–acceptor Stenhouse adducts

Chemical Science (2023)

Francisco A. Reza-González Emmanuel Villatoro Mariana M. Reza Jesús Jara‐Cortés Héctor García-Ortega

Photo-switching of Stenhouse donor–acceptor adducts by a non-linear optical input.

Acceptor

10.1039/d3sc01223a

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Citations (7)

CCDC 280197: Experimental Crystal Structure Determination

The Cambridge Structural Database (2006)

Pooja Sharma José G. López‐Cortés C. Ortega N. Rosas A. Cabrera

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/cc9dkmv

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Synthesis of new γ-lactones from preactivated monosubstituted pyrazines and TMS–ketene acetals

Canadian Journal of Chemistry (2012)

Azucena Garduño-Alva M. Carmen Ortega‐Alfaro José G. López‐Cortés Isabel Chávez Joaquín Barroso‐Flores

The double addition of bis(trimethylsilyl) ketene acetals (1a–1b, R 1 = CH 3 , –(CH 2 ) 5 –) to 2-substituted pyrazines promoted by triflic anhydride leads to γ-lactones in a single step. A systematic study involving electron-withdrawing and electron-donating groups (R 2 = CN, COOMe, PhCH=CH, Cl, Me, OMe) in the pyrazine ring reveals a strong dependence of electronic effects on the regiochemistry of nucleophilic addition.

Trimethylsilyl

Pyrazine

Nucleophilic Addition

10.1139/v2012-016

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Citations (11)

CCDC 2295705: Experimental Crystal Structure Determination

The Cambridge Structural Database (2024)

Miguel A. Alvarado-Castillo Salvador Cortés‐Mendoza José E. Barquera‐Lozada Francisco Delgado Rubén A. Toscano

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccdc.csd.cc2h1w0g

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CCDC 2295708: Experimental Crystal Structure Determination

The Cambridge Structural Database (2024)

Miguel A. Alvarado-Castillo Salvador Cortés‐Mendoza José E. Barquera‐Lozada Francisco Delgado Rubén A. Toscano

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccdc.csd.cc2h1w3k

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An expedient approach to tetrahydrofuro[3,2-b]pyridine-2(3H)-ones via activation of pyridine N-oxide by triflic anhydride

Tetrahedron Letters (2010)

N. Gualo‐Soberanes M. Carmen Ortega‐Alfaro José G. López‐Cortés Rubén A. Toscano H. Rudler

Pyridine-N-oxide

10.1016/j.tetlet.2010.04.030

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Citations (12)