Direct carbohydroximoylation of aromatics with primary nitroalkanes in triflic acid (TFSA).

Primary nitroalkanes react with aromatics in triflic acid to yield arylated oximes at 70–80°C.     

Cross-metathesis between ethane and toluene catalyzed by [([triple bond, length as m-(SiO)(2)TaH]: the first example of a cross-metathesis reaction between an alkane and an aromatic

The silica-supported tantalum hydride [([triple bond, length as m-dash]SiO)(2)TaH] catalyzes at moderate temperature (150-250 degree C) the cross-metathesis reaction between toluene and ethane, to form mainly ethylbenzene and xylenes.     

Mixed electric-magnetic second-order nonlinear optical response of helicenes

The mixed electric-magnetic second-order nonlinear optical responses of oriented films of helicenes have been computed ab initio using the random phase approximation method and compared to the pure electric-dipole counterpart. It turns out that the mixed electric-magnetic responses can be of the same order of magnitude as the pure electric-dipole counterpart when there is no donor/acceptor (D/A) substituent or these D/A pairs are weak, i.e., when the pure electric-dipole response is small. When adding strong D/A substituents, the pure electric-dipole response increases substantially and much more than its mixed electric-magnetic counterpart. Consequently, the ratio between the mixed electric-magnetic and pure electric responses decreases. Although there is no general rule, the mixed responses evolve as a function of substitution quasi similarly to the pure electric contribution. This study confirms therefore the possibility of tuning the mixed electric-magnetic response by employing appropriate chiral molecules.