[3+2] Cycloaddition of Diazocarbonyl Compounds to 1,1-Dinitroethenes: Synthesis of Functionalized gem-Dinitrocyclopropanes - Ivanova, Olga A; Budynina, Ekaterina M; Averina, Elena B; Kuznetsova, Tamara S; Grishin, Yurii K; Zefirov, Nikolai S (Synthesis, 2007)