Palladium-catalyzed decarboxylative allylation of vinyloxazolidin-2-ones with sodium sulfinates: stereoselective assembly of highly functionalized ()-allylic amines.

We report a general approach to highly functionalized ()-allylic amines by decarboxylative allylation of vinyloxazolidin-2-ones. This process engages sodium sulfinates as nucleophiles to form a new carbon-sulfur bond, utilizing a palladium catalyst generated from Pd(OAc) and diphosphine ligand dpppe. The scope of the protocol is illustrated by the synthesis of 30 representative allylic amines with high regio- and stereoselectivity.

Characteristics of intermolecular forces, physicochemical, textural and microstructural properties of preserved egg white with Ca(OH) addition.

The effects of Ca(OH) on the physicochemical, mechanical and microstructural characteristics, intermolecular forces and protein patterns of preserved egg white (PEW) were investigated. Results suggested that Ca(OH) (0.1%) reduced the free alkalinity content and turbidity and increased the brightness of PEW.