Sequential One-Pot Access to Molecular Diversity through Aniline Aqueous Borylation
摘要:
On the basis of our recently reported aniline aqueous borylation, molecular diversity was achieved in a one-pot process by combining other reactions such as esterification, Suzuki-Miyaura coupling, hydrogenolysis, or Petasis borono-Mannich.
retrievable nanocomposite was prepared by in situ polycondensation and entrapment of iron oxide nanoparticles. This material was found to be efficient in trapping excess electrophilic reagents such as carbonylcompounds, acid chlorides and isothiocyanates. Advantages of the new scavenger include facile preparation, high loading capacity, low cost, satisfactory swelling properties in polar solvents, and
2<i>H</i>-Chromenes from Salicylaldehydes by a Catalytic Petasis Reaction
作者:Qian Wang、M. G. Finn
DOI:10.1021/ol006710r
日期:2000.12.1
The Petasis condensation of vinylic or aromatic boronic acids, aromatic aldehydes, and amines is assisted by a hydroxy group adjacent to the aldehyde moiety. The products derived from salicylaldehydes and vinylboronic acids undergo cyclization to 2H-chromene compounds with ejection of amine upon heating. A catalytic preparation of 2H-chromenes using resin-bound amine is reported, allowing the convenient
Tetranuclear Zn<sub>2</sub>Ln<sub>2</sub> coordination clusters as catalysts in the Petasis borono-Mannich multicomponent reaction
作者:Prashant Kumar、Kieran Griffiths、Smaragda Lymperopoulou、George E. Kostakis
DOI:10.1039/c6ra17209a
日期:——
We report herein for the first time the efficiency of heteronuclear Zn/Ln coordination clusters (CCs) as catalysts for the multicomponent Mannich-type condensation that involves amines, aldehydes and boronic acids, known...
Three-component, solvent-free synthesis of Betti base catalyzed by sulfated polyborate
作者:Manisha S. Patil、Chetan K. Khatri、Ganesh U. Chaturbhuj
DOI:10.1007/s00706-018-2169-z
日期:2018.8
this work, efficient, mild, and eco-friendly procedure of 1-aminoalkyl-2-phenol/Betti base from one-pot three-component condensations of aldehyde, phenol, and morpholine in the presence of sulfated polyborate catalyst, under a solvent-free condition at 100 °C, is described. The key advantages of the present method are short reaction time, high yields, aqueous work-up procedure, low cost, stable, reusable
Microwave-assisted nanocatalysis: A CuO NPs/rGO composite as an efficient and recyclable catalyst for the Petasis-borono–Mannich reaction
作者:Anshu Dandia、Sarika Bansal、Ruchi Sharma、Kuldeep S. Rathore、Vijay Parewa
DOI:10.1039/c8ra05203d
日期:——
CuO NPs/rGO composite was synthesized and characterized by various analytical techniques an used as a recyclable catalyst for Petasis-borono–Mannich reaction under microwave irradiation.