MCM-41-N-propylsulfamic acid: An efficient catalyst for one-pot synthesis of 1-amidoalkyl-2-naphtols

Hajjami, Maryam; Ghorbani, Farshid; Bakhti, Fariba

doi:10.1016/j.apcata.2013.11.002

Cited by 64 publications

(45 citation statements)

References 49 publications

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“…The second weight loss of 8.58 % in the range of 180-380°C was due to degradation of sulfonic acid groups. The third weight loss of 3.88 % in the range of 380-600°C was result of the thermal decomposition of the organic residues [36].…”

Section: Resultsmentioning

confidence: 99%

Nano silica-bonded N-propylsulfamic acid as an efficient and environmentally benign catalyst for the synthesis of 1,5-benzodiazepines

Tarannum

Siddiqui

2016

Monatsh Chem

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A heterogeneous nanosilica-bonded N-propylsulfamic acid catalyst was successfully prepared and characterized by FT-IR, powder XRD, SEM-EDX, TEM, 13 C CP-MAS, and TG analyses. The promoting ability of this nanocomposite was probed through highly efficient synthesis of 1,5-benzodiazepines by a three component reaction of o-phenylenediamines, 3-acetyl-4-hydroxycoumarin, and different aldehydes. The catalyst was recycled for eight cycles with almost unaltered catalytic activity. The advantages of present protocol are energy efficiency, excellent yield of products in shorter reaction time (5-10 min), and use of non-toxic catalyst/solvent. Graphical abstract

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Section: Resultsmentioning

confidence: 99%

Nano silica-bonded N-propylsulfamic acid as an efficient and environmentally benign catalyst for the synthesis of 1,5-benzodiazepines

Tarannum

Siddiqui

2016

Monatsh Chem

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“…This result can be easily interpreted due to the fact that the presence of pendant group on the surface that partially blocks the adsorption of nitrogen molecules. Such significant decrease of textural properties of porous materials on grafting was already reported [49].The wall thickness of MCM-48 was 14.3 Å where calculated by the following equation [50]:…”

Section: Catalyst Synthesis and Characterizationmentioning

confidence: 91%

Preparation and Characterization of Organically Modified MCM-48 as Heterogonous Catalyst for Oxidation of Sulfides and Thiols

Hajjami

Yousofvand

2015

Catal Lett

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MCM-48 mesoporous synthesized and grafted with aminopropyl triethoxysilane (APTES) and subsequently reacted by isatin to obtain the imine of MCM-48. Addition of ZrOCl 2 Á8H 2 O, leading to form the complex of Zr(IV)/isatin-MCM-48 as new Schiff base complex of zirconium(IV)-modified-MCM-48. The synthesized catalyst was characterized by XRD, TGA, FT-IR and BET. The resulting catalyst was efficient for selective oxidation of sulfides to sulfoxides and oxidation of thiols to disulfides with hydrogen peroxide. In this method isolation and reusability of catalyst have been investigated Graphical Abstract MCM-48 O O O O

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“…Also following our current study in the synthesis of 1-amidoalkyl-2-naphthols 29 we would like to report that silica supported glycerosulfonic acid as a solid acid catalyst which has been used in the synthesis of 1-amidoalkyl-2-naphthol derivatives in glycerol as solvent (Scheme 2).…”

Section: Resultsmentioning

confidence: 99%

Incredible Role of Glycerol in Multicomponent Synthesis of 2,3-Dihydroquinazoline-4(1H)-ones and 1-Amidoalkyl-2-naphthols

Hajjami¹,

Bakhti²,

Ghiasbeygi³

2015

Croat. Chem. Acta

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Abstract. An efficient and green synthesis of 1-amidoalkyl-2-naphthols via one-pot three-component condensation of aromatic aldehydes, acetamide and 2-naphthol in the presence of catalytic amounts of glycerosulfonic acid in glycerol as a green solvent was elaborated. Also a simple method for the one-pot threecomponent synthesis of 2,3-dihydroquinazoline-4(1H)-ones using of isatoic anhydride, aldehydes and ammonium acetate in the presence of glycerol as a green catalyst and solvent was described. In this light we introduced the brilliant and valuable role of glycerol in the synthesis of 2,3-dihydroquinazoline-4(1H)-ones and 1-amidoalkyl-2-naphthols.

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MCM-41-N-propylsulfamic acid: An efficient catalyst for one-pot synthesis of 1-amidoalkyl-2-naphtols

Cited by 64 publications

References 49 publications

Nano silica-bonded N-propylsulfamic acid as an efficient and environmentally benign catalyst for the synthesis of 1,5-benzodiazepines

Nano silica-bonded N-propylsulfamic acid as an efficient and environmentally benign catalyst for the synthesis of 1,5-benzodiazepines

Preparation and Characterization of Organically Modified MCM-48 as Heterogonous Catalyst for Oxidation of Sulfides and Thiols

Incredible Role of Glycerol in Multicomponent Synthesis of 2,3-Dihydroquinazoline-4(1H)-ones and 1-Amidoalkyl-2-naphthols

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