Synthesis and characterization of recyclable O-carboxymethyl chitosan Schiff base for the effective removal of Cd(II) from aqueous solution

Schiff base Mo(vi) complexes grafted on Merrifield resin as recyclable and efficient catalysts for the synthesis of pyrrole-2-ones

“…MoO 2 (acac) 2 was prepared according to a previous study. 39 Melting points were determined on a Hanon MP120 digital melting-point apparatus and uncorrected. The surface morphology and particle size were studied using a Hitachi SU8010S SEM instrument and SEM energy dispersive X-ray spectroscopy (EDS).…”

“…37 In our previous work, Schiff base compounds have shown excellent high temperature and pH tolerance as adsorbents for Cd ion removal. 38,39 Furthermore, Schiff base molybdenum complexes displayed good catalytic activities for olefin epoxidation, [40][41][42][43] alcohol oxidation 44,45 and quinazolin-one synthesis. 46 In order to continue our research, we tried to promote the synthesis of pyrrole-2-ones through a multicomponent onepot reaction using aromatic amines, aldehydes and ethyl pyruvate with Merrifield resin supported Schiff base molybdenum complexes as highly efficient catalysts (Scheme 1).…”

Selective oxidation of alcohols promoted by cis-Dioxomolybdenum (VI) ONO Complexes

“…In this regard, the development of suitable ligands for this application is an important research field for catalysis. Among the important class of ligands, Schiff bases are known and have been extensively used for many applications such as adsorbent to remove toxic metal ion from aqueous solution [16][17][18], or as ligands in transition metal based catalysts [19][20][21][22], particularly, Schiff bases as ligands have been found in the development of highly efficient catalysts with good selectivity and activity for oxidation of alcohols, such as Schiff base manganese(III) complex [15], MoO 3 /Cu Schiff base nanoparticles [23], amide-functionalized metal (Co(II) and Zn(II)) organic frameworks (MOFs) [24].…”

Selective synthesis of 2‐substituted 2,3‐dihydroquinazolin‐4(1H)‐ones and quinazolin‐4(3H)‐ones catalyzed by Schiff base dioxomolybdenum(VI) complex

“…Schiff bases compounds have been widely used, for example as adsorbents to remove heave metal ions from liquid, 30,31 or as catalysts; for instance, Schiff base molybdenum(VI) complexes have been successfully used to catalyze olefins epoxidation, 32–34 sulfides 35 and alcohols oxidation 36 . Concerning molybdenum compounds for the synthesis of quinazolinones, Mo(CO) 6 was reported to promote the reaction as “CO” source but not as catalyst, also molybdenum doped ZnO was used as catalyst for the synthesis of quinazolinones 37 .…”