Chemistry of Polyhalogenated Nitrobutadienes, 3: [4+2] Cycloadditions of (Z)-1,1,4-Trichloro-2,4-dinitrobuta-1,3-diene and Subsequent Reactions - Zapol’skii, Viktor A; Namyslo, Jan C; Blaschkowski, Björn; Kaufmann, Dieter E (Synlett, 2006)