Synthesis and heteroelectrocyclization of unsymmetrically substituted diazomalonamides
作者:Yu. Yu. Morzherin、Yu. O. Subbotina、Yu. I. Nein、M. Yu. Kolobov、V. A. Bakulev
DOI:10.1023/b:rucb.0000042291.70287.2d
日期:2004.6
of unsymmetrically substituted diazomalonamides to 1,2,3-triazoles was studied by the method of intramolecular competitive reactions. The kinetic and thermodynamic characteristics of the process were determined. Quantum-chemical calculations for the monorotatory electrocyclic and nonrotatory heteroelectrocyclic mechanisms of cyclization were carried out. N-Aryldiazomalonamides undergo cyclization according
开发了一种选择性程序来合成 1,2,3-三唑和不对称取代的重氮丙二酰胺。通过分子内竞争反应的方法研究了不对称取代的重氮丙二酰胺环化为1,2,3-三唑。确定了该过程的动力学和热力学特性。对环化的单旋转电环和非旋转杂电环机制进行了量子化学计算。N-芳基重氮丙二酰胺根据杂电环机制进行环化,而 N-烷基重氮丙二酰胺的环化通过单旋机制进行。这些过程之间竞争的实验常数是(1.3—8.3)·103(DMSO-d6)和(45.2—72.4)·103(CD3OD)。