Volatile esters contribute important floral and fruity sensory properties to wine. Numerous factors influence the biosynthesis and hydrolysis of esters throughout yeast fermentation; however, methods to monitor the dynamic changes in ester production that occur during winemaking processes are limited. In this study, we showed that solid phase microextraction (SPME), a rapid, solventless samplin...

The solventless synthesis of tris(pyrazolyl)phenylmethane ligands of formula C₆H₅C(PzR2)₃ (R = H, Me), starting from PhCCl₃ and 3,5-dimethylpyrazole (PzMe2) or pyrazole (Pz) was performed. The sterically crowded C₆H₅C(PzMe2)₃ is thermally transformed into the bis(pyrazolyl)(p-pyrazolyl)phenylmethane ligand PzMe2-C₆H₄CH(PzMe2)₂. In this compound both PzMe2 rings are linked through the N-atom to ...

A common ideology of the coatings industry is that performance of solventless architectural coatings must be poor since they lack conventional coalescing agents. Indeed, it is well established that useful protective coatings must possess below ambient minimum film formation temperatures (MFT or MFFT) for flow, leveling, and substrate adhesion, and reach a glass transition temperature (T,) well ...

Unfortunately, many toxic solvents are used in chemistry laboratories and the manufacturing of materials, which poses a serious risk to process safety, natural environment, human health. In this review, different tools for solvent-free organic reactions have been surveyed as an approach green chemistry, where known upset our ecosystems so enormous research effort has exerted during last decade ...