Metallovesicles as smart nanoreactors for green catalytic synthesis of benzimidazole derivatives in water

Abstract

Green catalytic synthesis of benzimidazoles using Cu metallovesicles as nanoreactors.

Cu(II)‐Amino Acid Ionic Liquid Surfactants: Metallovesicles as Nano‐Catalytic Reactors for Cross Dehydrogenative Coupling Reaction in Water

“…The decrease in fluorescence intensity I 1 and increase in I ChemistrySelect surfactant moieties with Cu(II) complex. [15] The exponential decrease in the autocorrelation function of synthesized confirming the formation of metallovesicles. The phenylalanine containing surfactant complex show a more compact structure which is likely due to π-π interactions between attached benzene ring.…”

“…have utilized the Cu (II) metallovesicles as nanoreactor to synthesize benzimidazole in water. Studies reveal high recyclability and low E‐factor of reaction under mild conditions [15] . The new results in this area prompted us to widen our interest in metalloaggregates [16] …”

Improving Water Stability of Metal–Organic Frameworks by a General Surface Hydrophobic Polymerization

“…64,65 The synthesis of benzimidazole, a classical Lewis-acid catalyzed reaction, was initially chosen for investigation due to its great potential in the development of pharmacologically active compounds. 66 Along this line, the reaction is initiated by adding benzaldehyde and the aqueous solution of ophenylenediamine to a round-bottom flask containing activated HKUST-1 or HKUST-1-P under magnetic stirring at 25 °C. As expected, HKUST-1-P possesses remarkable catalytic activity with a high yield of >99% (Figure 4a).…”

Synthesis of novel benzimidazoles and benzothiazoles via furan‐2‐carboxaldehydes, o‐phenylenediamines, and 2‐aminothiophenol using Cu(II) Schiff‐base@SiO2 as a nanocatalyst

“…One of the most common methods for synthesizing benzimidazole and benzothiazole derivatives is through oxidative cyclization reaction between o ‐phenylenediamines and 2‐aminothiophenol with benzaldehyde. In recent years, the syntheses of benzimidazoles and benzothiazoles were reported using a plethora of catalysts, such as metal–organic framework (MOF) MIL‐101(Cr), [ 24 ] NH 2 ‐MIL‐125(Ti), [ 25 ] MgCl 2 , [ 26 ] Ce(NO 3 ) 3 .6H 2 O, [ 27 ] copper metallovesicles (CuMVs), [ 28 ] Ni‐MCM‐41, [ 29 ] Yb(OTf) 3 , [ 30 ] H 2 O 2 /Fe(NO 3 ) 3 , [ 31 ] vanadium–salen nanoparticles supported on silica, [ 32 ] cobalt–salen complex supported on activated carbon, [ 33 ] copper nanoparticles on charcoal, [ 34 ] Co 2+ complex of [7‐hydroxy‐4‐methyl‐8‐coumarinyl]glycine ([Co(MCG)(H 2 O) 3 ]), [ 35 ] iron‐doped multi‐walled carbon nanotubes (Fe/MWCNTs), [ 36 ] chromium (III)–salen complex nanoparticles on AlPO 4 , [ 37 ] CoFe 2 O 4 @SiO 2 @PAF‐IL, [ 38 ] and 2,6‐dimethyl‐1‐nitropyridin‐1‐ium trinitromethanide [2,6‐DMPy‐NO 2 ]C(NO 2 ) 3. [ 39 ]…”