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The π-complexes [CuCl(C3H5NHC2H4CN)] (I), [(C 3H5NH2C2H4CN)Cu2Cl3] (II), [((C3H5)2NHC2H 4CN)CuCl2] (III), and [((C3H5)2NHC2H4CN)CuBr2] (IV) are obtained as single crystals by the ac electrochemical synthesis on copper wire electrodes from ethanolic solutions of 3-(allylamino)propanenitrile, 3-(diallylamino)propanenitrile, and CuX2 (X = Cl, Br). Their crystal structures are determined. The crystals of compounds I, III, and IV are monoclinic, space group P21/c, Z = 4. The crystals of compound II are triclinic, space group P1, Z = 2. The unit cell parameters are a = 11.125(4), b = 8.769(4), c = 8.570(4) A, β = 90.94(4)°, V = 835.9(6) A3 (I); a = 6.2566(4), b = 7.5975(6), c = 11.1251(8) A, α = 90.896(6)°, β = 92.827(5)°, γ = 94.340(5)°, V = 526.57(7) A3 (II); a= 11.656(4), b= 6.992(4), c = 14.681(5) A, β = 100.89(4)°, V = 1174.9(9) A3 (III); a = 11.845(4), b = 7.282(4), c= 14.855(5) A, β = 100.37(4)°, V = 1260.4(9) A3 (IV). The coordination mode of the Cu(I) atom in complex I includes two halogen atoms, the C=C bond, and the secondary amine N atom. The coordination environment in isostructural crystals of complexes III and IV is formed by the C=C bond and three halogen atoms as in complex II. Pleiades Publishing, Ltd., 2012.

The efficient and very simple conjugate addition of aromatic and aliphatic amines to α,β-unsaturated carbonyl compounds under solvent-free conditions in the presence of catalytic amount of silicon tetrachloride is reported. The reaction of aryl and alkyl amines with different Michael acceptors gave the corresponding Michael adducts with simple catalyst and good to excellent yields. Georg Thieme Verlag Stuttgart New York.

An efficient aza-Michael addition of amines to a variety of activated olefins was carried out under solvent free conditions using iodine-alumina as a catalyst at room temperature or under microwave irradiation (in case of solid) in high yield. 2009 Bentham Science Publishers Ltd.