... 4 CB Zieger, Jr., and RF Heck, J. Org. ... Highly Convenient and Large Scale Synthesis of 5-chloroindole and its 3-substituted Analogues, Journal of the ... 6 Gordon W. Gribble, Palladium in Heterocyclic Chemistry - A Guide for the Synthetic Chemist, 2007, 26, 81 CrossRef; 7 Siritron ...