A general and convenient route to oxazolyl ligands
作者:Helen C. Aspinall、Oliver Beckingham、Michael D. Farrar、Nicholas Greeves、Christopher D. Thomas
DOI:10.1016/j.tetlet.2011.07.070
日期:2011.10
A diverse range of chiral and achiral oxazolyl ligands, which have many applications including catalysis and luminescent devices, are synthesized simply in three steps from readily available and inexpensive phenol and amino alcohol starting materials. The method can be applied to ligands with electron-donating/-withdrawing and sterically demanding/undemanding substituents, and can conveniently be scaled up to >25 g of product. (C) 2011 Elsevier Ltd. All rights reserved.
Utilization of ultrasonic irradiation as green and effective one-pot protocol to prepare novel series of bis-2-amino-1,3,4-oxa(thia)diazoles and bis-tetrazoles
作者:Wael Abdelgayed Ahmed Arafa、Ahmed Fawzy Abdel-Magied
DOI:10.24820/ark.5550190.p010.197
日期:——
In an effective and straightforward conversion, bis-semicarbazones and bis-thiosemicarbazones are transformed into a diversity of novel substituted bis-2-amino-1,3,4-oxadiazoles and bis-2-amino-1,3 ...