An expedient synthesis of pyrrole-2-phosphonates via direct oxidative phosphorylation and γ-hydroxy-γ-butyrolactams from pyrroles
摘要:
An expedient oxidative phosphorylation of pyrroles has been disclosed. The reaction of dialkyl phosphite and pyrrole in the presence of AgNO3/K2S2O8 in DMF/H2O (8:1) produced pyrrole-2-phosphonates in good yields. In the absence of dialkyl phosphite, gamma-hydroxy-gamma-butyrolactam derivative was formed as a major product. (C) 2013 Elsevier Ltd. All rights reserved.
The Pd(ii)-catalyzed pyridine-directed carbonylative cycloamidation of ketoimines has provided an efficient protocol for assembly of pyrido[1,2-a]pyrimidin-4-ones.
4-Trisubstituted pyrroles were synthesized from enolizable aliphatic aldehydes and primary aliphatic amines by using iodine as the dual Lewis acid/mild oxidant. In the presence of 3.0 equiv of TBHP, enolizable α,β-unsaturated aldehyde, for example, cocal reacted with aromatic primary amines to form C2-iodized N-arylpyrroles. An acetal-containing pyrrole was successfully prepared from 4-aminobutyraldehyde
A New Synthesis of 1,4-Diaryl-1,3-butadienes Utilizing the Anil Synthesis
作者:M. Paventi、A. S. Hay
DOI:10.1055/s-1990-27039
日期:——
The anil synthesis was employed in the preparation of 1,4-diarylsubstituted 1,3-butadienes 7 from 1-arylpropenes 5 and N- arylideneanilines (aromatic Schiff bases) 6 in dimethylformamide solution and a strong base as catalyst obtained in situ by reacting metallic sodium with this solvent.
TITANIUM (IV) COMPOUNDS AND METHODS OF FORMING HETEROCYCLIC COMPOUNDS USING SAME
申请人:REGENTS OF THE UNIVERSITY OF MINNESOTA
公开号:US20160200746A1
公开(公告)日:2016-07-14
The present disclosure provides Titanium (IV) compounds and methods of making heterocyclic compounds such as pyrroles using Titanium (IV) compounds. In certain embodiments, the Titanium (IV) compound is present in catalytic amounts.
1,2,4-Triphenylpyrroles: Synthesis, Structure and Luminescence Properties
作者:Joana R. M. Ferreira、Raquel Nunes da Silva、João Rocha、Artur M. S. Silva、Samuel Guieu
DOI:10.1055/s-0039-1690828
日期:2020.4
processes. Certain pyrrole derivatives are fluorescent and may be used as molecular probes or biomarkers in the diagnosis of diseases, such as Alzheimer’s or Parkinson’s. Herein is reported the synthesis of five new pyrrole derivatives bearing phenyl rings on positions 1, 2, and 4, with electron-donating groups at the periphery. The introduction of more or stronger electron-donating groups red-shifts and