Iridium-catalyzed ortho-C-H borylation of aromatic aldimines derived from pentafluoroaniline with bis(pinacolate)diboron.

The development of an Ir-catalyzed ortho-C-H borylation of aromatic aldimines derived from pentafluoroaniline is reported. This reaction proceeded at 120 °C to afford the corresponding borylated products in high yield with good regioselectivity using an Ir complex formed in situ from [Ir(OMe)(cod)]2/2(C6F5)3P in the presence of 2-norbornene.

Relationship between halitosis and periodontal disease - associated oral bacteria in tongue coatings.

Aim: The objective of our study was to investigate the relationship between halitosis and oral bacteria in tongue coating (TC) and saliva samples from patients with halitosis, and to evaluate the effect of tongue cleaning on halitosis.

Methods: Ninety-four participants complaining of oral malodour were included in the study. Organoleptic (OR) values, volatile sulphur compound (VSC) concentrations determined by gas chromatography and TC scores were used as clinical parameters of halitosis.