In the title compound, C(15)H(9)F(4)N(3)O(2)S, the N,N'-disubstituted thio-urea fragment adopts a cis,trans geometry, stabilized by an intra-molecular N-H⋯O hydrogen bond to the carbonyl O atom of the tetra-fluoro-benzoyl group. The central thio-urea group makes dihedral angles of 47.79 (7) and 35.54 (8)° with the two aromatic rings. In the crystal, mol-ecules are linked via N-H⋯O and N-H⋯S hyd...

The title dimethyl sulfoxide (DMSO) solvate, C(17)H(18)N(4)O(3)·C(2)H(6)OS, shows the disubstituted urea derivative to adopt an almost planar geometry (r.m.s. deviation for non-H atoms = 0.132 Å); the mol-ecule has non-crystallographic twofold mol-ecular symmetry. This conformation is stabilized by two intra-molecular O-H⋯N hydrogen bonds. The components of the crystal are connected by N-H⋯O hy...

In the title compound, C(17)H(18)N(4)O(3)·C(3)H(7)NO, the main disubstituted urea and solvate mol-ecules are linked by pairs of N-H⋯O hydrogen bonds. In the main mol-ecules, the benzene rings form a dihedral angle of 15.59 (13)° a;nd two intra-molecular O-H⋯N hydrogen bonds influence the mol-ecular conformation. In the crystal structure, weak inter-molecular C-H⋯O inter-actions link the hydroge...

A fast and efficient protocol for the synthesis of N,N'-disubstituted urea derivatives from alkyl halides and primary or secondary amines has been developed. The synthetic pathway combines nucleophilic substitutions and a Staudinger-aza-Wittig reaction in the presence of polymer-bound diphenylphosphine under 14 bar of CO2 pressure and has been performed in a one-pot two-step process. The protoc...

The synthesis and biological evaluation of new types of N,N′-disubstituted thiourea and urea derivatives as inhibitors of both neuronal nitric oxide synthase (nNOS) and inducible nitric oxide synthase (iNOS) are described. These compounds have been designed by reduction of the carbonyl group in the thiourea and urea kynurenamine derivatives 3 previously synthesized by our research group. The sy...

A new class of inhibitors of juvenile hormone epoxide hydrolase (JHEH) of Manduca sexta and further in vitro characterization of the enzyme are reported. The compounds are based on urea and amide pharmacophores that were previously demonstrated as effective inhibitors of mammalian soluble and microsomal epoxide hydrolases. The best inhibitors against JHEH activity so far within this class are N...

Treating 2-chloro-4-(4-chlorophenyl)-6-methylbenzo[d]-3,1-oxazinium hexachloroantimonate (1) with one equivalent of alcohol or mercaptane led, after hydrolysis with aq. NaOH, to the formation of 4,4-disubstituted-1,4-dihydro-2H-6-methyl-3,1-benzoxazin-2-ones (3). Large excess addition of alcohol afforded either 4’-chloro-2-isocyanato-5-methylbenzophenone disubstitutedketal (4) or N-{2[(4-chloro...

Several methods have been reported for the syn­ thesis of isocyanates, most of them involving the use of phosgene: e.g. phosgene and primary amines [1] either in basic [2] or in acidic medium [1]; phosgene and diaryl urea [1]; phosgene and l-alkyl-3-arylsulphonyl urea [3]; or phosgene and sulfinyl amines [4], Isocyanates were further synthesized from olefins or alkyl halides by the use of isocy...