This paper describes the applicability of 1,3-dichloro-5,5-dimethylhydantoin, as a cheap, stable and commercially available catalyst, in the promotion of the synthesis of 1,8-dioxo-octahydro-xanthenes (DOXOs) via the one-pot condensation of aldehydes and cyclic 1,3-dicarbonyl compounds. This novel synthetic method has the advantages of high yields, short reaction times, low cost and av...

In the title compound, C(17)H(12)Cl(2)N(6)O(3), the 1H-1,2,3-triazole ring [maximum deviation = 0.003 (1) Å] forms dihedral angles of 34.08 (6) and 28.38 (6)°, respectively, with the nitro- and dichloro-substituted benzene rings. The dihedral angle between the benzene rings is 6.68 (5)°. In the crystal, C-H⋯O hydrogen bonds link the mol-ecules into chains running parallel to the a axis.

The title compound, C(20)H(32)ClNO(3), was obtained via a tandem asymmetric Michael addition-elimination reaction of (5S)-3,4-dichloro-5-(l-menth-yloxy)furan-2(5H)-one and 4-methyl-piperidine in the presence of potassium fluoride. The furan-one ring is approximately planar [maximum atomic deviation = 0.022 (2) Å] while the cyclo-hexane ring adopts a chair conformation. Weak inter-molecular C-H⋯...

The dinuclear centrosymmetric title compound, [Sn(2)(C(6)H(5))(6)(C(6)H(8)N(2)S(4))]·CH(2)Cl(2), features a distorted cis-trigonal-bipyramidal coordination geometry for Sn based on a C(3)S(2) donor set. The dinuclear mol-ecule lies across a centre of inversion. The solvent dichloro-methane mol-ecule is disordered about a centre of inversion.

In the title compound, C(10)H(11)Cl(2)NO, the N-H bond is syn to the 3-methyl substituent in the aromatic ring, similar to that observed in N-(3,4-dimethyl-phen-yl)acetamide and to the 3-chloro substituent in 2,2-dichloro-N-(3,4-dichloro-phen-yl)acetamide, and contrasting with the anti conformation observed for the 3-methyl substituent in 2,2,2-trichloro-N-(3,4-dimethyl-phen-yl)acetamide. On th...