Proteases have several industrial applications due to their hydrolytic activity [1] and have attracted considerable interest due to their ability to synthesize peptides in organic media [2,3]. Protease-catalyzed peptide synthesis occurs either by a thermodynamically controlled process (condensation of the acid and amine groups) or by a kinetically controlled process (aminolysis of an ester). In...

Polydimethylsiloxane (PDMS) is an elastomeric polymer frequently used as implant material, for flexible tubing and in microfluidic devices. The pronounced hydrophobic surface of this unique material impedes many applications where a good wetting behavior required. Consequentially, various ways modifications have been to introduce new properties. Plasma treatment the most popular technique respe...

Polyurethane (PU) foams are widely used for many applications, however the use of toxic isocyanate monomers their synthesis has recently led researchers to non-isocyanate PU foams. The most promising alternative is aminolysis cyclic carbonate which yields polyhydroxyurethanes (PHU). Nevertheless, obtained suffer from significant flammability and require introduction flame retardants improve ret...

The aminolysis reactions of thioesters and thiocarbonates, in either aqueous solution or in 44 wt % aqueous ethanol at 25 °C, are subjected to a kinetic investigation. The Brønsted-type plots (lg kN vs. amine pKa, where kN is the nucleophilic rate constant) obtained for these reactions can be grouped in three categories: linear plots with slopes 0.8–1, biphasic plots (two linear portions and a ...

Abstract Regioselective tritylation and carbonate aminolysis were employed in this work to synthesize cellulose 2,3- bis (3,5-dimethylphenyl carbamate)-6-( α -phenylethyl carbamate)-type chiral selectors. We evaluated optimized the critical aspects of regioselective detritylation at C6 glucopyranose units polysaccharide backbone. The advantage using II comparison I for was analyzed time determi...