Study of Reactivity in the 1,3-Dipolar Cycloaddition Reactions Leading to New Triazolopyrrolopyrazine Ring Systems

[摘要]：The influence of the structural symmetry of the 2 pi double-reactive-sites component in the 1,3-dipolar cycloaddition reactions, involving nitrilimines as dipoles, was investigated. The experimental data showed that the loss of the symmetry leads to the formation of the monocycloadduct in good yields.

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