Chiral Salen Complexes:  An Overview to Recoverable and Reusable Homogeneous and Heterogeneous Catalysts

Cellulose sulfuric acid (CSA) and starch sulfuric acid (SSA) as solid and heterogeneous catalysts in green organic synthesis: recent advances

“…This method is also highly chemoselective for aldehydes in the presence of ketones. 4 and CSA were employed in this protocol. However, CSA was proven the best catalyst for this transformation.…”

A New Mn-Salen Micellar Nanoreactor for Enantioselective Epoxidation of Alkenes in Water

“…Olefin epoxidation is one of the most important and useful reaction because it leads to a wide range of organic compounds with significant applications in several technological fields [5]. In particular, chiral Mn(III)-salen complexes have been used as catalysts to obtain chiral epoxides, which represent an essential target due to the importance of enantiomerically pure compounds in industry and pharmaceuticals [6].…”

Alumina sulfuric acid (ASA), tungstate sulfuric acid (TSA), molybdate sulfuric acid (MSA) and xanthan sulfuric acid (XSA) as solid and heterogeneous catalysts in green organic synthesis: a review

“…[2][3][4][5][6] Homogeneous catalysts such as sulfuric acid (H 2 SO 4 ), hydrofluoric acid (HF), hydrobromic acid (HBr), hydrochloric acid (HCl) and tri-fluoroacetic acid (CF 3 COOH) are frequently used in organic synthesis. 7 However, these acid catalysts are toxic, harmful, corrosive and difficult to handle.…”