(3RS,4SR)-Methyl 4-(2-chloro-5,8-di-methoxy-quinolin-3-yl)-1-phenyl-pyrrolidine-3-carboxyl-ate

Ethyl 3-(2-chloro-5,8-dimethoxyquinolin-3-yl)-2-cyanooxirane-2-carboxylate

The title mol­ecule, C₁₇H₁₅ClN₂O₅, contains a quinolyl unit linked to a functionalized oxirane system with a 2,3-trans arrangement of the substituents (ester group versus quinol­yl). The structure can be described as being built up from zigzag layers parallel to (10). The heterocyclic ring of the quinolyl unit forms a dihedral angle of 60.05 (1)° with the oxirane plane. The crystal packing is stabilized by inter­molecular C—H⋯O and C—H⋯N hydrogen bonding, resulting in the formation of an infinite three-dimensional network and reinforcing the cohesion between the layers.

N-Isopropyl-6-methyl-2-phenyl-quinoline-3-carboxamide

In the title compound, C₂₀H₂₀N₂O, the dihedral angle between the quinoline ring system and the phenyl ring is 49.40 (5)°. In the crystal structure, zigzag layers of mol­ecules, in which the quinoline units are parallel to the (10) plane, are arranged perpendicular to the b axis. Inter­molecular N—H⋯O hydrogen bonds connect the mol­ecules into chains along [010], reinforcing the cohesion between the layers of the structure.

5,8-Dimeth-oxy-2-phenyl-1,4-dihydro-quinoline-3-carbonitrile

The crystal structure of the title mol­ecule, C₁₈H₁₆N₂O₂, can be described as two types of crossed layers parallel to the (110) and (10) planes. An intra­molecular N—H⋯O hydrogen bond occurs.

2-Bromo-ethyl 2-chloro-6-methyl-quinoline-3-carboxyl-ate

In the title compound, C₁₃H₁₁BrClNO₂, the two rings of the quinoline group are fused in an axial fashion at a dihedral angle of 1.28 (9)°. In the crystal, molecules are arranged in zigzag layers along the c axis. The crystal packing is stabilized by weak C—H⋯O hydrogen bonds and inter­molecular inter­actions between Br and O atoms [Br⋯O= 3.076 (2) Å], resulting in the formation of a three-dimensional network.