Synthesis of Some New 1,2,4-Triazole Derivatives byMitsunobu Chemistry
作者:Abdolali Alizadeh
DOI:10.1002/hlca.200590218
日期:2005.10
reactive 1 : 1 intermediate produced in the reaction between triphenylphosphine and diisopropyl azodicarboxylate has been trapped by isocyanates or isothiocyanates to yield 1,2,4-triazole derivatives 2 (Scheme 1). The structures of the highly functionalized compounds 2 were corroborated spectroscopically (IR, 1H- and 13C-NMR, EI-MS) and by elemental analyses. A mechanism for this type of cyclization