BF<sub>3</sub>-grafted Fe<sub>3</sub>O<sub>4</sub>@Sucrose nanoparticles as a highly-efficient acid catalyst for syntheses of Dihydroquinazolinones (DHQZs) and Bis 3-Indolyl Methanes (BIMs)
core and grafting of boron trifluoride (BF3) onto the new surface. The catalytic activity of these nanoparticles was tested in syntheses of Dihydroquinazolinones (DHQZs) and Bis (3‐Indolyl) Methanes (BIMs) as two fruitful pharmaceutical structures. Acidic capacity, FT‐IR, XRD, VSM, TGA and SEM–EDX tests are carried out on such novel nanoparticles (NPs). Catalyst has shown more acidic capacity per one
当前的论文表示将蔗糖固定在Fe 3 O 4核上并将三氟化硼(BF 3)接枝到新表面上。在二氢喹唑啉酮(DHQZs)和双(3-吲哚基)甲烷(BIM)的合成中,作为两种卓有成效的药物结构,测试了这些纳米颗粒的催化活性。对这种新型纳米颗粒(NP)进行了酸性容量,FT-IR,XRD,VSM,TGA和SEM-EDX测试。与以前报道的磺化同系物相比,催化剂每1克NP的酸容量更高。
Regioselective reduction of substituted dinitroarenes using baker's yeast
作者:Claire L. Davey、Lawson W. Powell、Nicholas J. Turner、Andrew Wells
DOI:10.1016/0040-4039(94)80139-8
日期:1994.10
A range of substituted dinitroaromatic compounds have been reduced usingbaker'syeast (Saccharamyces cerevisiae), in some cases with very high selectivity. A model is presented to account for the origin of the selectivity together with a possible mechanism for the reduction.
A convenient and mild cyclocondensation using water-soluble aldehydes in water
作者:Taku Kitanosono、Soo Min Cho、Shū Kobayashi
DOI:10.1016/j.tet.2018.10.023
日期:2018.12
The use of negatively charged aluminosilicate layers and Lewis acidic cations embedded therein allowed efficient cyclocondensation of bisamines with water-soluble aldehydes to be achieved in water. The protocol does not involve acidic or reflux conditions, thereby avoiding undesired byproduct formation. The use of water as a reaction medium is indispensable to ensure high reaction yields.
Deep eutectic solvent mediated synthesis of quinazolinones and dihydroquinazolinones: synthesis of natural products and drugs
作者:Suman Kr Ghosh、Rajagopal Nagarajan
DOI:10.1039/c6ra00855k
日期:——
A mild and greener protocol was developed to synthesize substituted quinazolinones and dihydroquinazolinonesviadeep eutectic solvent mediated cyclization with aliphatic, aromatic, and heteroaromatic aldehydes in good to excellent yields.
Efficient synthesis of 2,3-dihydroquinazolin-4(1H)-ones using heterogeneous solid acid catalysts: unexpected formation of 2,3-dihydro-2-(4-(tetrahydro-2H-pyran-2-yloxy)butyl)-quinazolin-4(1H)-one
作者:Sandip Bibishan Bharate、Nagaraju Mupparapu、Sudhakar Manda、Jaideep B. Bharate、Ramesh Mudududdla、Rammohan R. Yadav、Ram A. Vishwakarma
DOI:10.3998/ark.5550190.0013.826
日期:——
The heterogeneoussolid acid catalysts Amberlyst-15 and silica-HClO 4 displays efficient catalytic properties for the synthesis of 2,3-dihydroquinazolin-4( 1H )-ones from anthranilamide and various aldehydes/ ketones under mild reaction conditions and in good yields. These catalysts also showed good catalytic activity for condensation of anthranilamide with a cyclic enol ether 3,4-dihydropyran and