RESUMO
The title compound, C(31)H(34)N(2)O(9), is a product of the Michael addition of the cyclic secondary amine subunit of the (bis-pidino)aza-14-crown-4 ether to dimethyl acetyl-ene-dicarboxyl-ate. The mol-ecule comprises a tricyclic system containing the aza-14-crown-3 ether macrocycle and two six-membered piperidinone rings. The aza-14-crown-3-ether ring adopts a bowl conformation with a dihedral angle between the planes of the fused benzene rings of 51.14â (5)°. The central piperidone ring has a boat conformation, whereas the terminal piperidone ring adopts a chair conformation. The dimethyl ethyl-enedicarboxyl-ate fragment has a cis configuration with a dihedral angle of 56.56â (7)° between the two carboxyl-ate groups. The crystal packing is stabilized by weak C-Hâ¯O hydrogen bonds.
RESUMO
The title compound, C(25)H(28)N(2)O(5), is a product of the Petrenko-Kritchenko condensation of N-acetyl-piperidone with 1,5-bis-(2-formyl-phen-oxy)-3-oxapentane and ammonium acetate. The mol-ecule comprises a fused penta-cyclic system containing an aza-14-crown-3-ether macrocycle, two piperidone and two benzene rings. The aza-14-crown-3-ether ring adopts a bowl conformation. The dihedral angle between the benzene rings fused to the aza-14-crown-4-ether unit is 70.18â (4)°. The central piperidone ring has a boat conformation, whereas the terminal piperidone ring adopts a chair conformation. The conformation of the central piperidone ring is determined by two intra-molecular N-Hâ¯O hydrogen bonds. In the crystal, mol-ecules are linked by weak C-Hâ¯O inter-actions into chains along [010].
RESUMO
The title compound, C(29)H(33)NO(8), is a product of the Michael addition of the cyclic secondary amine subunit of the aza-14-crown-4 ether to dimethyl acetyl-enedicarboxyl-ate. The piperidinone ring exhibits a distorted chair conformation, and the dimethyl ethylenedicarboxylate fragment has a cis configuration with a dihedral angle of 78.96â (5)° between the two carboxyl-ate groups. The crystal packing is stabilized by weak C-Hâ¯O hydrogen bonds.