A new concept of a photoremovable chiral auxiliary (PCA), based on the chiral benzoin chromophore, is introduced. This moiety can control the asymmetric formation of a Diels-Alder adduct, and then be removed in a subsequent photochemical step in high chemical and quantum yields. Selective formation of the products at up to 96% ee was observed in the presence of a Lewis acid catalyst in the case...

The title compound, C(14)H(11)ClO, is a racemic derivative of benzoin. Its carbonyl group adopts a nearly eclipsed conformation with the Cl substituent characterized by a dihedral angle of 17.5 (2)°. The closest intermolecular π-π contact is 4.258 (1) Å.

This paper provides an overview of the recent advances on polymeric photoinitiators for UV curing. During the last decade, significant developments have been achieved in the synthesis of macrophotoinitiators, due to the advantages derived of their macromolecular nature, in comparison with their corresponding low molecular weight analogues. In particular, a variety of macromolecules containing t...

An N -Heterocyclic carbene (NHC) catalyzed aza -benzoin reaction of benzothiazole-2-carboxaldehydes and -sulfonylimines is reported for the first time. The target benzothiazole-containing aminoketone products bearing different substituents substitution patterns can be obtained in good to excellent yields under mild conditions.