Guanidine Synthesis: Use of Amidines as Guanylating Agents
作者:Mattijs Baeten、Bert U. W. Maes
DOI:10.1002/adsc.201501146
日期:2016.3.3
hindered, oxidation‐sensitive and chiral amines. Examples for the synthesis of both acyclic and cyclic guanidines are provided. 2‐Propoxyphenyl iodide (2‐PrOPhI) by‐product, generated from the oxidant [N‐(p‐toluenesulfonyl)imino](2‐propoxyphenyl)iodinane (2‐PrOPhINTs), can be isolated in high yields making regeneration of the hypervalent iodine reagent possible. The utility and greenness of the synthetic
Synthesis of Secondary Amides from<i>N</i>-Substituted Amidines by Tandem Oxidative Rearrangement and Isocyanate Elimination
作者:Pradip Debnath、Mattijs Baeten、Nicolas Lefèvre、Stijn Van Daele、Bert U. W. Maes
DOI:10.1002/adsc.201400648
日期:2015.1.12
The periodinane reagents are obtained from the commercially available phenyliodine(III) diacetate [PhI(OAc)2, (PIDA)] by ligand exchange with carboxylic acids. The N‐substituted amidine substrates are easily synthesized from readily available nitriles. The method is applicable for secondary amide synthesis, based on both aliphatic and (hetero)aromatic amines, including challenging amides consisting