Efficient One-Pot, Two-Step, Microwave-Assisted Procedure for the Synthesis of Polysubstituted 2-Aminoimidazoles
作者:Denis S. Ermolat'ev、Eugene V. Babaev、Erik V. Van der Eycken
DOI:10.1021/ol062421c
日期:2006.12.1
A microwave-assisted, one-pot, two-step protocol was developed for the construction of polysubstituted 2-aminoimidazoles. This process involves the sequential formation of imidazo[1,2-a]pyrimidinium salts from readily available 2-aminopyrimidines and alpha-bromocarbonyl compounds, followed by opening of the pyrimidine ring with hydrazine. [reaction: see text]
<scp>d</scp>-Glucose: An Efficient Reducing Agent for a Copper(II)-Mediated Arylation of Primary Amines in Water
作者:Maud Bollenbach、Patrick Wagner、Pedro G. V. Aquino、Jean-Jacques Bourguignon、Frédéric Bihel、Christophe Salomé、Martine Schmitt
DOI:10.1002/cssc.201600801
日期:2016.11.23
A copper‐catalyzed Ullmann‐type amination with primary amines in water with a combination of copper(II) triflate [Cu(OTf)2], dipivaloylmethane, and d‐glucose is reported. The mild conditions and the use of an inexpensive catalyst as well as a renewable feedstock (d‐glucose and the surfactant TPGS‐750‐M, which is derived from vitamin E) make this protocol a safe and convenient strategy for efficient