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Topic Review
Synthesis of Pyran Derivatives
Heterogeneous catalysis (HC) has become a valuable means for designing sustainable production protocols to obtain superior intermediates, synthons, and potent bioactive heterocycles. The heterogeneous catalysts proved economical and eco-friendly due to the effectiveness of non-hazardous metals for constructing nanomaterials for atom-economical organic reactions. Heterogeneous catalysts significantly affected scientific and industrial innovations due to their tuneable textural properties, flexible acid-base characteristics, higher thermal stability, and improved reusability, with their excellent performance over their enormous counterparts.
  • 551
  • 18 Oct 2022
Topic Review
Synthesis of Porous Composite Metal Oxides
Porous transition-metal oxides with good intrinsic activities can be used to disperse and stabilize the active noble metal phases, thus promoting improvements in selectivity and activity of the supported noble metal catalysts and in the meanwhile reinforcing the optimized utilization of noble metals.
  • 639
  • 27 Feb 2023
Topic Review
Synthesis of Polypeptides with Activated Amino Acid Monomers
Commonly, three different synthetic pathways are used to prepare peptides in the laboratory: via the polymerization of amino acid N-carboxyanhydrides (NCAs), amino acid N-thiocarboxyanhydrides (NTAs), and N-phenoxycarbonyl amino acids (NPCs); via various stepwise coupling reactions of α-amino acids, such as during solid phase peptide synthesis (SPPS); or via recombinant DNA techniques for expressing peptides in microorganisms. Polypeptides that are synthesized through SPPS have controlled primary sequences and can fulfill certain functionalities, but it is difficult to create high molecular weight polypeptides above 100 residues, due to the inevitable side reactions. Recombinant DNA techniques can create polypeptides with specific sequences and high molecular weights. Moreover, they allow for peptide production on a very large scale. However, specialized equipment, which is not readily available in most synthetic laboratories, is needed for this method. The polymerization of activated amino acid monomers enables the formation of bioactive and high molecular weight polypeptides in a facile and expedient manner. The process begins with the conversion of amino acids into the corresponding activated monomers; afterwards, polymerization is initiated in the presence of certain initiators. Although polypeptides that are synthesized in this way lack precise sequence control, their synthetic advantages make this method attractive and economical for synthesizing polypeptides in large quantities.
  • 598
  • 12 May 2022
Topic Review
Synthesis of Polymers for Electrospun Nanofiber Membranes
The use of nanofiber a filtering medium is well established, and the electrospun nanofiber have several applications such as electrospun fibers for air purification and air filtration media. The different characteristics of nanofibers as morphologies, mechanical and optical properties, thermal stability, electrical conductivity, photocatalytic activity and bioactivity underlie their macromolecular structure and chemical composition. 
  • 534
  • 08 Feb 2023
Topic Review
Synthesis of Poly (Butylene Succinate)
The impact of plastics on the environment can be mitigated by employing biobased and/or biodegradable materials (i.e., bioplastics) instead of the traditional “commodities”. In this context, poly (butylene succinate) (PBS) emerges as one of the most promising alternatives due to its good mechanical, thermal, and barrier properties, making it suitable for use in a wide range of applications. Still, the PBS has some drawbacks, such as its high crystallinity, which must be overcome to position it as a real and viable alternative to “commodities”. 
  • 3.3K
  • 25 Mar 2022
Topic Review
Synthesis of Piperazines by C-H Functionalization
Piperazine ranks as the third most common nitrogen heterocycle in drug discovery, and it is the key component of several blockbuster drugs, such as Imatinib (also marketed as Gleevec) or Sildenafil, sold as Viagra. 
  • 728
  • 22 Oct 2021
Topic Review
Synthesis of Perovskite Nanowires
Metal halide perovskites are promising energy materials because of their high absorption coefficients, long carrier lifetimes, strong photoluminescence, and low cost. Low-dimensional halide perovskites, especially one-dimensional (1D) halide perovskite nanowires (NWs), have become a hot research topic in optoelectronics owing to their excellent optoelectronic properties. 
  • 586
  • 31 Jan 2023
Topic Review
Synthesis of PbO Nanostructures
Black-phosphorus-analog lead monoxide (PbO), as a new emerging 2D material, has rapidly gained popularity due to its unique optical and electronic properties. Both theoretical prediction and experimental confirmation have revealed that PbO exhibits excellent semiconductor properties, including a tunable bandgap, high carrier mobility, and excellent photoresponse performance, which is undoubtedly of great interest to explore its practical application in a variety of fields, especially in nanophotonics. 
  • 246
  • 14 Jul 2023
Topic Review
Synthesis of Organoclays
Organoclays are effective adsorbents, prepared by intercalation or surface grafting of clays and clay minerals with various organic compounds. Organoclays have important practical applications as adsorbents of a wide range of organic pollutants and some inorganic contaminants.
  • 734
  • 06 Aug 2021
Topic Review
Synthesis of nucleobase-modified RNA oligonucleotides
The review summarizes the methods of site-specific incorporation of nucleobase-modified units into RNA oligomers via the post-synthetic strategy including recently discovered native hypermodified functional groups, fluorescent dyes, photoreactive groups, disulfide crosslinks, and nitroxide spin labels.
  • 1.8K
  • 06 Aug 2020
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