Since both cyanide and azide have been shown to block the oxidation of cytochrome c by cytochrome oxidase (l), it has been generally accepted that the toxicity of these substances is due to this property. A considerable amount of evidence has accumulated, however, indicating that aside and cyanide do not inhibit respiration in a parallel manner under all conditions. Thus Stannard (2) was able t...

The title compound, C12H7Cl3O3S, was synthesized via a nucleophilic substitution reaction between phenol and 2,4,5-tri-chloro-benzene-sulfonyl chloride. The two aryl rings are oriented gauche to one another around the sulfonate S-O bond, with a C-S-O-C torsion angle of -70.68 (16)°, and the two rings are inclined to one another by 72.40 (7)°. In the crystal, mol-ecules are linked via various C-...

In the title compound, K(+)·C(6)H(4)Cl(2)NO(2)S(-)·1.5H(2)O, one water mol-ecule has crystallographically imposed twofold symmetry. The K(+) ion is heptacoordinated by three O atoms from water mol-ecules and by four sulfonyl O atoms of N-chloro-2-chloro-benzene-sulfonamide anions. The S-N distance of 1.582 (2) Å is consistent with an S-N double bond. In the structure, the sulfonyl-O and the wat...

 The synthesis in water of new sulfone derivatives under microwave irradiation is described. This eco-friendly process leads to the expected products in good yields by reaction of various substituted sulfinates (commercially available or obtained by reduction of the corresponding sulfonyl chlorides) with 4-chloromethyl-2-methyl-5-nitro-1,3-thiazole. In order to evaluate the antiproliferative ef...

The alpha-alkylation of N-sulfonyl hydrazones via in situ-derived azoalkenes provides an umpolung approach to ketone alpha-alkylation that has considerable potential with regard to catalysis and the direct incorporation of functionality not amenable to the use of enolate chemistry. Herein, we describe the first Cu(I)-catalyzed addition of Grignard reagents to in situ-derived N-sulfonyl azoalken...

In the crystal of the title compound, C(14)H(13)Cl(2)NO(2)S, the N-H bond in the C-SO(2)-NH-C segment orients itself away from the two ortho-methyl groups in the aniline benzene ring and towards the ortho-chloro group of the sulfonyl benzene ring. The mol-ecule is bent at the S atom with a C-SO(2)-NH-C torsion angle of -100.48 (18)°. The sulfonyl and aniline benzene rings are tilted relative to...

BACKGROUND The area of biodegradable/sustainable polymers is one of increasing importance in the 21st Century due to their positive environmental characteristics. Lewis acidic metal centres are currently one of the most popular choices for the initiator for the polymerisation. Thus, in this paper we report the synthesis and characterisation of a series of monometallic homopiperazine Ti(IV) comp...

A microwave-assisted three-component protocol involving N-1 alkylation of 2-alkynylindoles with epichlorohydrin, ring opening of the epoxide with sodium azide, and an intramolecular Huisgen azide-internal alkyne 1,3-dipolar cycloaddition domino sequence has been described. The efficacy of the methodology has been demonstrated by treating various 2-alkynylindoles (aromatic/aliphatic) with epichl...

An experimentally simple sequential one-pot RuAAC reaction, affording 1,5-disubstituted 1H-1,2,3-triazoles in good to excellent yields starting from an alkyl halide, sodium azide, and an alkyne, is reported. The organic azide is formed in situ by treating the primary alkyl halide with sodium azide in DMA under microwave heating. Subsequent addition of [RuClCp*(PPh(3))(2)] and the alkyne yielded...

In the title compound, C(13)H(9)Cl(2)NO(3)S·H(2)O, the conformation of the C=O bond is syn to the meta-Cl group in the benzoyl ring. The mol-ecules are twisted at the S-N bond with a C-S-N-C torsion angle of 72.9 (2)°. The dihedral angle between the sulfonyl benzene ring and the S-NH-C-O segment is 77.8 (1)° and that between the sulfonyl and benzoyl benzene rings is 80.5 (1)°. In the crystal, m...