The title compound, C(16)H(12)Cl(2)O, was synthesized from 1-naphthol and 1,2-dichloro-benzene with anhydrous aluminium chloride as a cataylst. In the mol-ecule, the two ring systems are approximately perpendicular to one other with a dihedral angle of 82.06 (4)°. There are two CH-type hydrogen bonds.

The title compound C(20)H(20)O(2), has the exocyclic C=C double bond in an E configuration. The two benzene rings form a dihedral angle of 72.92 (6)°.

In the title compound, C(16)H(11)F(3)O(2), the γ-pyran-one ring adopts an envelope conformation with the chiral C atom standing out of the ring plane. In the crystal, molecules are linked by C-H⋯O and C-H⋯F inter-actions.

In the title mol-ecule, C(13)H(13)NO, the dihedral angle between the benzene ring and the fused pyrrole ring is 2.03 (5)°. The methyl group at the 3-position has an equatorial orientation. The cyclo-hexene ring adopts an envelope conformation. Three C atoms of the cyclo-hexene ring, with their attached H atoms, and all atoms of the methyl group are disordered over two positions, the site-occupa...

In the crystal structure of the title compound, C(15)H(9)NO(4), weak C-H⋯O inter-actions generate rings with R(2) (2)(8) motifs. The supra-molecular aggregation is completed by the presence of C-H⋯O and van der Waals inter-actions.

An efficient construction of 2-(N-arylamino)benzaldehydes and N-aryl-3,10-dihydroacridin-1(2H)-one derivatives starting from 2- hydroxybenzaldehydes has been developed. The synthesis of N-aryl-3,10-dihydroacridin-1(2H)-ones is based on the Knoevenagel condensation of dimedone to various 2-(N-arylamino)benzaldehydes, followed by an intramolecular enamination in the presence of 20 mol% of nanocry...

Preparation of 4-benzyl-2-substituted phthalazin-1-one derivatives 2-8 is reported. Condensation of 4-benzyl-1-chlorophthalazine (9) with a series of different nucleophiles gave 4-benzylphthalazin-1-ylamino derivatives (10-13 and 16) and 4-amino-2-[N'-(4-benzylphthalazin-1-yl)-hydrazino]-6-arylpyrimidine-5-carbonitriles (14a,b). Interaction of 9 with ambident anions was also studied. 5-Benzyl-6...