A novel, concise, and convenient synthesis of 5‐(3′‐indolyl)oxazoles using relatively benign reagent [hydroxy(2,4‐dinitrobenzenesulfonyloxy)iodo]benezene has been described. The advantages of this procedure include operational simplicity, good yield, and avoidance of the use of toxic metal. J. Heterocyclic Chem., (2010).
A simple and efficient synthesis of naturallyoccurring 5-(3-indolyl)oxazoles is described. The key steps of this convergent approach are the formation of a 3-tosyloxyacetyl-1-benzenesulfonylindole, a 3-amino-acetyl-1-benzenesulfonylindole hydrochloride and cyclodehydration of an α-acylaminoketone.