Biopolymers have become very attractive as they are degradable, biocompatible, non-toxic
and renewable. Due to the intrinsic reactive amino groups, chitosan is vibrant in the midst of …

Enantioselective synthesis with small-molecule chiral hydrogen-bond donors has emerged
as a frontier of research in the field of asymmetric catalysis. Organic chemists have …

It was found that the phosphoric acid derivatives of general structure 1 serve as highly
effective catalysts for the direct addition of acetyl acetone to N-Boc-protected arylimines. The …

The term “organocatalysis” describes the acceleration of chemical reactions through the
addition of a substoichiometric quantity of an organic compound. The interest in this field has …

The metal (ion)-free catalysis of organic reactions is a contemporary challenge that is just
being taken up by chemists. Hence, this field is in its infancy and is briefly reviewed here …

Organocatalysis has captured the imagination of a significant group of synthetic chemists.
Much of the mechanistic understanding of these reactions has come from computational …

We synthesized a new class of bifunctional catalysts bearing a thiourea moiety and an
amino group on a chiral scaffold. Among them, thiourea 1e bearing 3, 5-bis (trifluoromethyl) …

Chiral phosphoric acids derived from axially chiral biaryls and related chiral Brønsted acids
have emerged as an attractive and widely applicable class of enantioselective …

Over the last decade the potential for N, N‐dialkyl (thio) urea derivatives to serve as active
metal‐free organocatalysts for a wide range of synthetically useful reactions susceptible to …

Hydrogen-bonding interaction plays a crucial role in the molecular recognition and
activation processes of various biologically important reactions that are mediated by …