Abstract
Diazo-transfer reaction of tosyl azide and alkyl 2-cyanoacetates in the presence of pyridine at 0 °C gives the corresponding alkyl 2-cyano-2-diazoacetates. This material readily undergoes nucleophilic attack by pyridinium 1-cyano-2-alkoxy-2-oxoethan-1-ide to form dialkyl (Z)-3-amino-2-cyano-4-diazopent-2-enedioates. The X-ray structure of a typical product is reported, as well as DFT computational studies that illuminate the structural features of these stable diazo compounds.
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We would like to thank the Research Council of Tarbiat Modares University for supporting this work.
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Yavari, I., Mohsenzadeh, R. & Kayanian, J. Synthesis and structure of dialkyl (Z)-3-amino-2-cyano-4-diazopent-2-enedioates. Monatsh Chem 151, 1829–1834 (2020). https://doi.org/10.1007/s00706-020-02712-4
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DOI: https://doi.org/10.1007/s00706-020-02712-4