The reaction mechanism of the γ-carbon addition of enal to imine under oxidative N-heterocyclic carbene catalysis is studied experimentally. The oxidation, γ-carbon deprotonation, and nucleophilic addition of γ-carbon to imine were found to be facile steps. The results of our study also provide highly enantioselective access to tricyclic sulfonyl amides that exhibit interesting antimicrobial ac...

The title compound, C(14)H(12)ClNO, a Schiff base derived from 3-methyl-salicyl-aldehyde, crystallizes in the phenol-imine tautomeric form with an E conformation for the imine functionality. The mol-ecule is not planar, the dihedral angle between the aromatic rings being 36.38 (5)°. The hy-droxy H atom is involved in a strong intra-molecular O-H⋯N hydrogen bond, generating an S(6) ring.

The photolysis at 222 nm of 5-methyltetrazole isolated in a cryogenic argon matrix leads to formation of methyl nitrile imine as primary product. Subsequent irradiation at 328 nm induces transformation of the nitrile imine into 4π-electron three-membered-ring 3-methyl-1H-diazirine, which photorearranges to give methyl carbodiimide. These products were characterized by IR spectroscopy and theore...

In the title compound, C30H24N4, the central benzo-quinonedi-imine moiety is approximately planar, with a maximum deviation of 0.044 (14) Å. The four terminal phenyl rings are twisted by 44.95 (11), 54.90 (10), 44.98 (10) and 50.68 (11)° with respect to the mean plane the benzo-quinonedi-imine unit. In the crystal, mol-ecules are linked by weak C-H⋯π inter-actions into supra-molecular chains ru...

The full mol-ecule of the title compound, C(12)H(10)Cl(2)N(2)S(2), is generated by the application of a centre of inversion. The thio-phene and imine residues are co-planar [the N-C-C-S torsion angle is -2.5 (4)°] and the conformation about the imine bond [1.268 (4) Å] is E. Supra-molecular arrays are formed in the bc plane via C-Cl⋯π inter-actions and these stack along the a axis.

Arylisonitriles (2 equivalents) react with alkyl and perfluoroalkyl radicals to form 2-alkylated indole-3-imines via two sequential additions to the isonitrile moiety followed by homolytic aromatic substitution. The three component reaction comprises three C-C bond formations. The endocyclic imine functionality in the products is more reactive in follow up chemistry and hydrolysis of the exocyc...

An imine-based 2D polymer side-functionalized with o-hydroxyl group was designed in regard to its potential ability to serve as a chelating agent and synthesized on a highly oriented pyrolytic graphite surface with a relatively low annealing temperature. When annealed to a higher temperature the o-hydroxyl group reacts further with the imine group, leading to the formation of oxazoline, which c...

The title compound, C14H16N2, is a pyrrole-2-carbaldimine ligand that shows an E conformation at the imine double bond. The dihedral angle between the rings is 78.3 (1)°. In the crystal, pairs of mol-ecules form centrosymmetric dimers [graph-set descriptor is presumably R(2)2(10)] via N-H⋯N hydrogen bonds between the pyrrole N-H group and the imine N atom of a neighbouring mol-ecule.

Charge transport in a porphyrin with four identical pyridyl substituents, 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine (TPyP), was investigated using the scanning tunneling microscopy break junction method. To determine the dominant pathway, we studied two structurally similar porphyrins, o-DPyP and p-DPyP. Our experiments reveal that charge transport through TPyP in a break junction configurat...

TMPP (5, 10, 15, 20 tetrakis {4-methoxyphenyl} 21H, 23H porphyrin) was labeled with technetium-99m via direct labeling technique using stannous chloride as a reducing agent. The optimum conditions that gave high labeling yield (95.2%) of Tc-TMPP complex were achieved by using 3mg TMPP, 100g SnCl2.2H2O, at pH 3 and 30min reaction time. Accumulation of Tc-TMPP complex was studied in tumor bearin...