The N-benzyl-6-chloro-4-(4-methoxyphenyl)-3-methyl-1,2,3,4-tetrahydroquinoline derivative (chemical formula: C24H24ClNO) was obtained from cationic imino Diels–Alder reaction catalyzed by BF3.OEt2. Molecular characterization was performed by 1H and 13C NMR, Fourier transform-infrared and gas chromatography-mass spectrometry. The X-ray powder diffraction (XRPD) pattern for the new compound was analyzed and found to be crystallized in an orthorhombic system with space group Fdd2 (No. 43) and refined unit-cell parameters a = 33.053(7) Å, b = 41.558(9) Å, c = 5.841(1) Å and V = 8023(2) Å3.
