A Concise Synthesis of N-Methyl-2,3-diferrocenyl-4,4-dicyanopyrrolidine through [3 + 2] Cycloaddition of Azomethine Ylides

Microwave-assisted synthesis of N-methyl-2,3-diferrocenyl-4,4-dicyanopyrrolidine has been accomplished in moderate yields via a facile 1,3-dipolar cycloaddition and its crystal structure was determined by single-crystal X-ray diffraction (CCDC no. 1583719). It crystallizes: C27H25Fe2N3, Mr = 503.20, orthorhombic, P212121, a = 10.4873(9), b = 10.5251(10), c = 20.8587(19) A, V = 2302.4(4) A3, ρ = 1.452 g cm−3, Z = 4, T = 298(2) K.