4,4,7-triphenyl-2,3,7-triazabicyclo[3.3.0]oct-2-ene-6,8-dione 以
neat (no solvent, solid phase) 为溶剂,
以100%的产率得到3,6,6-triphenyl-3-azabicyclo[3.1.0]hexane-2,4-dione
参考文献:
名称:
Solid-state photochemistry of crystalline pyrazolines: reliable generation and reactivity control of 1,3-biradicals and their potential for the green chemistry synthesis of substituted cyclopropanes
Diphenyldiazomethane regioselectively adds to 2-R-substituted maleimides to yield 1-pyrazoline derivatives, 1-R-7-aryl-6,8-dioxo-4,4-Biphenyl-2,3,7-triazabicyclo[3.3.0]oct-2-enes that on heating liberate nitrogen to afford substituted 3-azabicyclo[3.1.0]hexanes. To the N-arylsubstituted imides of itaconic acid the diphenyldiazomethane adds to furnish 5-aryl-4,6-dioxo-1,1-Biphenyl-5-azaspiro[2.4]heptanes.
Reactions with Diazoalkanes. V. Action of Diazoalkanes and of Aryl Azides on N-Arylmaleimides