One-pot Tandem Reactions for Direct Conversion of Thiols and Disulfides to Sulfonic Esters, Alcohols to Bis(indolyl)methanes and Synthesis of Pyrroles Catalyzed by N-Chloro Reagents
convenient synthesis of sulfonic esters from thiols and disulfides has been described. In situ preparation of sulfonyl chlorides from thiols is accomplished by oxidation with Chloramin-T, tetra-butylammonium chloride (t-Bu4NCl) and water. The sulfonyl chlorides are then further allowed to react with phenol derivatives in the same reaction vessel. Also, a facile synthesis of bis(indolyl)methanes from alcohols
Synthesis and characterization of a Ni nanoparticle stabilized on Ionic liquid-functionalized magnetic Silica nanoparticles for tandem oxidative reaction of primary alcohols
activity of these nanoparticles was tested in aerobic oxidation of primary alcohols that showed good performance in the wide range of primary alcohols in water at mild reaction conditions. As a second step of this work, the tandem oxidativesynthesis of alkylacrylonitriles and bisindolylmethanes were investigated using primary alcohols under oxidation conditions. This catalyst system can be recovered using
[reaction: see text] The enantioselective copper(II)-catalyzed Friedel-Crafts addition of indoles to N-sulfonyl aldimines was developed using chiral bisoxazoline as ligands, and high enantioselectivities (up to 96% ee) were achieved.
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。
An efficient and practical synthesis of bis(indolyl)methanes catalyzed by N-sulfonic acid poly(4-vinylpyridinium) chloride
A mild, simple and convenient procedure for the synthesis of bis(indolyl)methane derivatives was described using N-sulfonic acid poly(4-vinylpyridinium) chloride as an efficient, cheap, and reusable catalyst under mild conditions.