2-Meth-oxy-9-phenoxy-acridine

(2RS,5'RS)-3',4'-Bis(4-chloro-phen-yl)-3,4-dihydro-spiro-[acridine-2,5'(4'H)-[1,2]oxazol]-1(2H)-one

The title compound, C27H18Cl2N2O2, represents a racemic mixture of the corresponding R,R and S,S diastereomers. The isoxazoline ring adopts an envelope conformation with the spiro C atom deviating by 0.093 (2) Å from the rest of the ring. The six-membered keto-substituted carbocycle has a sofa conformation with the methyl-ene C atom adjacent to the spiro center deviating by 0.289 (2) Å from the mean plane of the remaining atoms. In the crystal, mol-ecules are linked via C-H⋯Cl inter-actions and C-Cl⋯O halogen bonds [2.958 (2) Å, 171.39 (7)°], which generate bifurcated R2(1)(6) ring motifs resulting in C2(1)[R2(1)(6)] chains running parallel to [010].

4'-(4-Chloro-phen-yl)-3'-(4-meth-oxy-phen-yl)-3,4-dihydro-1H,4'H-spiro-[acridine-2,5'-isoxazol]-1-one

In the title compound, C(28)H(21)ClN(2)O(3), the quinoline ring system is essentially planar with a maximum deviation of 0.0436 (17) Å. The isoxazole and cyclo-hexane rings adopt envelope conformations. The isoxazole ring is almost orthogonal to both the quinoline ring system and the cyclo-hexane ring, making dihedral angles of 85.75 (8) and 81.46 (9) °, respectively. The O atom deviates signifigantly from the six-membered carbocyclic ring by 0.3947 (16) Å. In the crystal, mol-ecules are linked into inversion dimers via pairs of C-H⋯O inter-actions, resulting in R(2) (2)(24) ring motifs.